diff --git a/retroshare-gui/src/gui/FileTransfer/SearchDialog.cpp b/retroshare-gui/src/gui/FileTransfer/SearchDialog.cpp
index 832970833..ed2498545 100644
--- a/retroshare-gui/src/gui/FileTransfer/SearchDialog.cpp
+++ b/retroshare-gui/src/gui/FileTransfer/SearchDialog.cpp
@@ -597,32 +597,35 @@ void SearchDialog::collOpen()
 
 			if (rsFiles->FileDetails(hash, RS_FILE_HINTS_EXTRA | RS_FILE_HINTS_LOCAL
 			                               | RS_FILE_HINTS_BROWSABLE | RS_FILE_HINTS_NETWORK_WIDE
-                                     | RS_FILE_HINTS_SPEC_ONLY, info)) {
-
+                                     | RS_FILE_HINTS_SPEC_ONLY, info))
+            {
 				/* make path for downloaded files */
 				std::string path;
 				path = info.path;
 
 				/* open file with a suitable application */
 				QFileInfo qinfo;
+                RsCollection::RsCollectionErrorCode err;
 				qinfo.setFile(QString::fromUtf8(path.c_str()));
-				if (qinfo.exists()) {
-					if (qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString)) {
-						RsCollection collection;
-						if (collection.load(qinfo.absoluteFilePath())) {
-							collection.downloadFiles();
-							return;
-						}
-					}
-				}
+                if (qinfo.exists() && qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString))
+                    RsCollection(qinfo.absoluteFilePath(),err).downloadFiles();
 			}
 		}
 	}
 
-	RsCollection collection;
-	if (collection.load(this)) {
-		collection.downloadFiles();
-	}//if (collection.load(this))
+    QString fileName;
+    if (!misc::getOpenFileName(nullptr, RshareSettings::LASTDIR_EXTRAFILE, QApplication::translate("RsCollectionFile", "Open collection file"), QApplication::translate("RsCollectionFile", "Collection files") + " (*." + RsCollection::ExtensionString + ")", fileName))
+        return ;
+
+    std::cerr << "Got file name: " << fileName.toStdString() << std::endl;
+
+    RsCollection::RsCollectionErrorCode err;
+    RsCollection collection(fileName, err);
+
+    if(err == RsCollection::RsCollectionErrorCode::NO_ERROR)
+        collection.downloadFiles();
+    else
+        QMessageBox::information(nullptr,tr("Error open RsCollection file"),RsCollection::errorString(err));
 }
 
 void SearchDialog::downloadDirectory(const QTreeWidgetItem *item, const QString &base)
diff --git a/retroshare-gui/src/gui/FileTransfer/SharedFilesDialog.cpp b/retroshare-gui/src/gui/FileTransfer/SharedFilesDialog.cpp
index 5abe9ab39..4645841a9 100644
--- a/retroshare-gui/src/gui/FileTransfer/SharedFilesDialog.cpp
+++ b/retroshare-gui/src/gui/FileTransfer/SharedFilesDialog.cpp
@@ -652,7 +652,7 @@ void SharedFilesDialog::copyLinks(const QModelIndexList& lst, bool remote,QList<
 
             QString dir_name = QDir(QString::fromUtf8(details.name.c_str())).dirName();
 
-            RetroShareLink link = RetroShareLink::createFileTree(dir_name,ft->mTotalSize,ft->mTotalFiles,QString::fromStdString(ft->toRadix64())) ;
+            RetroShareLink link = RetroShareLink::createFileTree(dir_name,ft->totalFileSize(),ft->numFiles(),QString::fromStdString(ft->toRadix64())) ;
 
 			if(link.valid())
 				urls.push_back(link) ;
@@ -821,8 +821,12 @@ void SharedFilesDialog::collOpen()
             qinfo.setFile(QString::fromUtf8(path.c_str()));
             if (qinfo.exists()) {
                 if (qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString)) {
-                    RsCollection collection;
-                    if (collection.load(qinfo.absoluteFilePath())) {
+
+                    RsCollection::RsCollectionErrorCode err;
+                    RsCollection collection(qinfo.absoluteFilePath(),err);
+
+                    if(err == RsCollection::RsCollectionErrorCode::NO_ERROR)
+                    {
                         collection.downloadFiles();
                         return;
                     }
@@ -831,10 +835,17 @@ void SharedFilesDialog::collOpen()
         }
     }
 
-    RsCollection collection;
-    if (collection.load(this)) {
+    QString fileName;
+    if (!misc::getOpenFileName(nullptr, RshareSettings::LASTDIR_EXTRAFILE, QApplication::translate("RsCollectionFile", "Open collection file"), QApplication::translate("RsCollectionFile", "Collection files") + " (*." + RsCollection::ExtensionString + ")", fileName))
+        return ;
+
+    std::cerr << "Got file name: " << fileName.toStdString() << std::endl;
+
+    RsCollection::RsCollectionErrorCode err;
+    RsCollection collection(fileName,err);
+
+    if(err == RsCollection::RsCollectionErrorCode::NO_ERROR)
         collection.downloadFiles();
-    }
 }
 
 void LocalSharedFilesDialog::playselectedfiles()
diff --git a/retroshare-gui/src/gui/FileTransfer/TransfersDialog.cpp b/retroshare-gui/src/gui/FileTransfer/TransfersDialog.cpp
index 6fc45a070..8dca82e28 100644
--- a/retroshare-gui/src/gui/FileTransfer/TransfersDialog.cpp
+++ b/retroshare-gui/src/gui/FileTransfer/TransfersDialog.cpp
@@ -2564,23 +2564,29 @@ void TransfersDialog::collOpen()
 				/* open file with a suitable application */
 				QFileInfo qinfo;
 				qinfo.setFile(QString::fromUtf8(path.c_str()));
-				if (qinfo.exists()) {
-					if (qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString)) {
-						RsCollection collection;
-						if (collection.load(qinfo.absoluteFilePath())) {
-							collection.downloadFiles();
-							return;
-						}
-					}
-				}
+                if (qinfo.exists() && qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString))
+                {
+                        RsCollection::RsCollectionErrorCode code;
+                        RsCollection(qinfo.absoluteFilePath(),code).downloadFiles();
+                        return;
+                }
 			}
 		}
 	}
 
-	RsCollection collection;
-	if (collection.load(this)) {
+    QString fileName;
+    if (!misc::getOpenFileName(nullptr, RshareSettings::LASTDIR_EXTRAFILE, QApplication::translate("RsCollectionFile", "Open collection file"), QApplication::translate("RsCollectionFile", "Collection files") + " (*." + RsCollection::ExtensionString + ")", fileName))
+        return ;
+
+    std::cerr << "Got file name: " << fileName.toStdString() << std::endl;
+
+    RsCollection::RsCollectionErrorCode code;
+    RsCollection collection(fileName,code);
+
+    if(code == RsCollection::RsCollectionErrorCode::NO_ERROR)
 		collection.downloadFiles();
-	}
+    else
+        QMessageBox::information(nullptr,tr("Error openning collection file"),RsCollection::errorString(code));
 }
 
 void TransfersDialog::collAutoOpen(const QString &fileHash)
@@ -2592,21 +2598,18 @@ void TransfersDialog::collAutoOpen(const QString &fileHash)
 		if (rsFiles->FileDetails(hash, RS_FILE_HINTS_DOWNLOAD, info)) {
 
 			/* make path for downloaded files */
-			if (info.downloadStatus == FT_STATE_COMPLETE) {
+            if (info.downloadStatus == FT_STATE_COMPLETE)
+            {
 				std::string path;
 				path = info.path + "/" + info.fname;
 
 				/* open file with a suitable application */
 				QFileInfo qinfo;
 				qinfo.setFile(QString::fromUtf8(path.c_str()));
-				if (qinfo.exists()) {
-					if (qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString)) {
-						RsCollection collection;
-						if (collection.load(qinfo.absoluteFilePath(), false)) {
-							collection.autoDownloadFiles();
-						}
-					}
-				}
+                RsCollection::RsCollectionErrorCode err;
+
+                if (qinfo.exists() && qinfo.absoluteFilePath().endsWith(RsCollection::ExtensionString))
+                    RsCollection(qinfo.absoluteFilePath(),err).autoDownloadFiles();
 			}
 		}
 	}
diff --git a/retroshare-gui/src/gui/RetroShareLink.cpp b/retroshare-gui/src/gui/RetroShareLink.cpp
index 6e377f70e..f87c72760 100644
--- a/retroshare-gui/src/gui/RetroShareLink.cpp
+++ b/retroshare-gui/src/gui/RetroShareLink.cpp
@@ -1143,11 +1143,13 @@ QString RetroShareLink::toHtmlSize() const
 
 	if (type() == TYPE_FILE && RsCollection::isCollectionFile(name())) {
 		FileInfo finfo;
-		if (rsFiles->FileDetails(RsFileHash(hash().toStdString()), RS_FILE_HINTS_EXTRA | RS_FILE_HINTS_LOCAL, finfo)) {
-			RsCollection collection;
-			if (collection.load(QString::fromUtf8(finfo.path.c_str()), false)) {
+        if (rsFiles->FileDetails(RsFileHash(hash().toStdString()), RS_FILE_HINTS_EXTRA | RS_FILE_HINTS_LOCAL, finfo))
+        {
+            RsCollection::RsCollectionErrorCode code;
+            RsCollection collection(QString::fromUtf8(finfo.path.c_str()), code) ;
+
+            if(code == RsCollection::RsCollectionErrorCode::NO_ERROR)
 				size += QString(" [%1]").arg(misc::friendlyUnit(collection.size()));
-			}
 		}
 	}
 	QString link = QString("<a href=\"%1\">%2</a> <font color=\"blue\">%3</font>").arg(toString()).arg(name()).arg(size);
diff --git a/retroshare-gui/src/gui/common/RsCollection.cpp b/retroshare-gui/src/gui/common/RsCollection.cpp
index 1baaed636..08474fb19 100644
--- a/retroshare-gui/src/gui/common/RsCollection.cpp
+++ b/retroshare-gui/src/gui/common/RsCollection.cpp
@@ -330,97 +330,128 @@ static void showErrorBox(const QString& fileName, const QString& error)
 	mb.exec();
 }
 
-bool RsCollection::load(const QString& fileName, bool showError /* = true*/)
+QString RsCollection::errorString(RsCollectionErrorCode code)
 {
+    switch(code)
+    {
+    default: [[fallthrough]] ;
+    case RsCollectionErrorCode::UNKNOWN_ERROR:                 return tr("Unknown error");
+    case RsCollectionErrorCode::NO_ERROR:                      return tr("No error");
+    case RsCollectionErrorCode::FILE_READ_ERROR:               return tr("Error while openning file");
+    case RsCollectionErrorCode::FILE_CONTAINS_HARMFUL_STRINGS: return tr("Collection file contains potentially harmful code");
+    case RsCollectionErrorCode::INVALID_ROOT_NODE:             return tr("Invalid root node. RsCollection node was expected.");
+    case RsCollectionErrorCode::XML_PARSING_ERROR:             return tr("XML parsing error in collection file");
+    }
+}
 
-	if (!checkFile(fileName,showError)) return false;
-	QFile file(fileName);
+RsCollection::RsCollection(const QString& fileName, RsCollectionErrorCode& error)
+{
+    if (!checkFile(fileName,error))
+        return ;
 
-	if (!file.open(QIODevice::ReadOnly))
-	{
-		std::cerr << "Cannot open file " << fileName.toStdString() << " !!" << std::endl;
-		if (showError) {
-			showErrorBox(fileName, QApplication::translate("RsCollectionFile", "Cannot open file %1").arg(fileName));
-		}
-		return false;
-	}
+    QFile file(fileName);
+
+    if (!file.open(QIODevice::ReadOnly))
+    {
+        std::cerr << "Cannot open file " << fileName.toStdString() << " !!" << std::endl;
+        error = RsCollectionErrorCode::FILE_READ_ERROR;
+        //showErrorBox(fileName, QApplication::translate("RsCollectionFile", "Cannot open file %1").arg(fileName));
+        return ;
+    }
 
     QDomDocument xml_doc;
     bool ok = xml_doc.setContent(&file) ;
-	file.close();
 
+    if(!ok)
+    {
+        error = RsCollectionErrorCode::XML_PARSING_ERROR;
+        return;
+    }
+    file.close();
 
+    QDomNode root = xml_doc.elementsByTagName("RsCollection").at(0).toElement();
 
-	return ok;
+    if(root.isNull())
+    {
+        error = RsCollectionErrorCode::INVALID_ROOT_NODE;
+        return;
+    }
+
+    recursParseXml(xml_doc,root,0);
+    error = RsCollectionErrorCode::NO_ERROR;
 }
 
-	// check that the file is a valid rscollection file, and not a lol bomb or some shit like this
-bool RsCollection::checkFile(const QString& fileName, bool showError)
+// check that the file is a valid rscollection file, and not a lol bomb or some shit like this
+
+bool RsCollection::checkFile(const QString& fileName, RsCollectionErrorCode& error)
 {
-	QFile file(fileName);
+    QFile file(fileName);
+    error = RsCollectionErrorCode::NO_ERROR;
 
-	if (!file.open(QIODevice::ReadOnly))
-	{
-		std::cerr << "Cannot open file " << fileName.toStdString() << " !!" << std::endl;
-		if (showError) {
-			showErrorBox(fileName, QApplication::translate("RsCollectionFile", "Cannot open file %1").arg(fileName));
-		}
-		return false;
-	}
-	if (file.reset()){
-	std::cerr << "Checking this file for bomb elements and various wrong stuff" << std::endl;
-	char c ;
+    if (!file.open(QIODevice::ReadOnly))
+    {
+        std::cerr << "Cannot open file " << fileName.toStdString() << " !!" << std::endl;
+        error = RsCollectionErrorCode::FILE_READ_ERROR;
 
-	std::vector<std::string> bad_strings ;
-	bad_strings.push_back(std::string("<!entity ")) ;
-	static const int max_size = 12 ; // should be as large as the largest element in bad_strings
-	char current[max_size] = { 0,0,0,0,0,0,0,0,0,0,0,0 } ;
-	int n=0 ;
+        //showErrorBox(fileName, QApplication::translate("RsCollectionFile", "Cannot open file %1").arg(fileName));
+        return false;
+    }
+    if (file.reset()){
+        std::cerr << "Checking this file for bomb elements and various wrong stuff" << std::endl;
+        char c ;
 
-		while( !file.atEnd() || n >= 0)
-	{
-			if (!file.atEnd())
-				file.getChar(&c);
-			else
-				c=0;
+        std::vector<std::string> bad_strings ;
+        bad_strings.push_back(std::string("<!entity ")) ;
+        static const int max_size = 12 ; // should be as large as the largest element in bad_strings
+        char current[max_size] = { 0,0,0,0,0,0,0,0,0,0,0,0 } ;
+        int n=0 ;
 
-		if(c == '\t' || c == '\n' || c == '\b' || c == '\r')
-			continue ;
+        while( !file.atEnd() || n >= 0)
+        {
+            if (!file.atEnd())
+                file.getChar(&c);
+            else
+                c=0;
 
-		if (n == max_size || file.atEnd())
-			for(int i=0;i<n-1;++i)
-				current[i] = current[i+1] ;
+            if(c == '\t' || c == '\n' || c == '\b' || c == '\r')
+                continue ;
 
-		if(n == max_size)
-			--n ;
+            if (n == max_size || file.atEnd())
+                for(int i=0;i<n-1;++i)
+                    current[i] = current[i+1] ;
 
-		if(c >= 'A' && c <= 'Z') c += 'a' - 'A' ;
+            if(n == max_size)
+                --n ;
 
-			if(!file.atEnd())
-			current[n] = c ;
-		else
-			current[n] = 0 ;
+            if(c >= 'A' && c <= 'Z') c += 'a' - 'A' ;
 
-		//std::cerr << "n==" << n <<" Checking string " << std::string(current,n+1)  << " c = " << std::hex << (int)c << std::dec << std::endl;
+            if(!file.atEnd())
+                current[n] = c ;
+            else
+                current[n] = 0 ;
 
-			for(uint i=0;i<bad_strings.size();++i)
-			if(std::string(current,bad_strings[i].length()) == bad_strings[i])
-			{
-					showErrorBox(file.fileName(), QApplication::translate("RsCollectionFile", "This file contains the string \"%1\" and is therefore an invalid collection file. \n\nIf you believe it is correct, remove the corresponding line from the file and re-open it with Retroshare.").arg(bad_strings[i].c_str()));
-					file.close();
-				return false ;
-				//std::cerr << "Bad string detected" << std::endl;
-			}
+            //std::cerr << "n==" << n <<" Checking string " << std::string(current,n+1)  << " c = " << std::hex << (int)c << std::dec << std::endl;
 
-			if(file.atEnd())
-			n-- ;
-		else if(n < max_size)
-			++n ;
-	}
-	file.close();
-		return true;
-		}
-	return false;
+            for(uint i=0;i<bad_strings.size();++i)
+                if(std::string(current,bad_strings[i].length()) == bad_strings[i])
+                {
+                    //showErrorBox(file.fileName(), QApplication::translate("RsCollectionFile", "This file contains the string \"%1\" and is therefore an invalid collection file. \n\nIf you believe it is correct, remove the corresponding line from the file and re-open it with Retroshare.").arg(bad_strings[i].c_str()));
+                    error = RsCollectionErrorCode::FILE_CONTAINS_HARMFUL_STRINGS;
+                    file.close();
+                    return false ;
+                    //std::cerr << "Bad string detected" << std::endl;
+                }
+
+            if(file.atEnd())
+                n-- ;
+            else if(n < max_size)
+                ++n ;
+        }
+        file.close();
+        return true;
+    }
+    error = RsCollectionErrorCode::UNKNOWN_ERROR;
+    return false;
 }
 
 #ifdef TO_REMOVE
@@ -467,7 +498,7 @@ bool RsCollection::save(const QString& fileName) const
 	return true;
 }
 
-bool RsCollection::recursParseXml(QDomDocument& doc,const QDomElement& e,const RsFileTree::DirIndex parent)
+bool RsCollection::recursParseXml(QDomDocument& doc,const QDomNode& e,const RsFileTree::DirIndex parent)
 {
     QDomNode n = e.firstChild() ;
 #ifdef COLLECTION_DEBUG
diff --git a/retroshare-gui/src/gui/common/RsCollection.h b/retroshare-gui/src/gui/common/RsCollection.h
index e21c118d2..31fa777a3 100644
--- a/retroshare-gui/src/gui/common/RsCollection.h
+++ b/retroshare-gui/src/gui/common/RsCollection.h
@@ -58,12 +58,24 @@ class RsCollection : public QObject
 	Q_OBJECT
 
 public:
+    enum class RsCollectionErrorCode:uint8_t {
+        NO_ERROR                      = 0x00,
+        UNKNOWN_ERROR                 = 0x01,
+        FILE_READ_ERROR               = 0x02,
+        FILE_CONTAINS_HARMFUL_STRINGS = 0x03,
+        INVALID_ROOT_NODE             = 0x04,
+        XML_PARSING_ERROR             = 0x05,
+    };
 
 	RsCollection(QObject *parent = 0) ;
 	// create from list of files and directories
 	RsCollection(const std::vector<DirDetails>& file_entries, FileSearchFlags flags, QObject *parent = 0) ;
     RsCollection(const RsFileTree& ft);
-	virtual ~RsCollection() ;
+    RsCollection(const QString& filename,RsCollectionErrorCode& error_code);
+
+    static QString errorString(RsCollectionErrorCode code);
+
+    virtual ~RsCollection() ;
 
 	void merge_in(const QString& fname,uint64_t size,const RsFileHash& hash) ;
 	void merge_in(const RsFileTree& tree) ;
@@ -74,9 +86,6 @@ public:
 	bool load(QWidget *parent);
     bool save(QWidget *parent) const ;
 #endif
-    // Loads file from disk.
-    bool load(const QString& fileName, bool showError = true);
-
 	// Save to disk
 	bool save(const QString& fileName) const ;
 
@@ -100,7 +109,7 @@ private slots:
 private:
 
     bool recursExportToXml(QDomDocument& doc,QDomElement& e,const RsFileTree::DirData& dd) const;
-    bool recursParseXml(QDomDocument& doc,const QDomElement& e,RsFileTree::DirIndex dd) ;
+    bool recursParseXml(QDomDocument& doc, const QDomNode &e, RsFileTree::DirIndex dd) ;
 
     // This function is used to populate a RsCollection from locally or remotly shared files.
     void recursAddElements(RsFileTree::DirIndex parent, const DirDetails& dd, FileSearchFlags flags) ;
@@ -118,7 +127,8 @@ private:
 #endif
 
     // check that the file is a valid rscollection file, and not a lol bomb or some shit like this
-	static bool checkFile(const QString &fileName, bool showError);
+    static bool checkFile(const QString &fileName, RsCollectionErrorCode &error);
+
 	// Auto Download recursively.
 	void autoDownloadFiles(ColFileInfo colFileInfo, QString dlDir) const ;