Index: sources/storage/Logger.cpp
===================================================================
diff -u -rc9f8f8cf3c6c37fc6460d8675c62c9442c4d4263 -re64766e5551e32c3ffd55c6b1fcb222128a1c325
--- sources/storage/Logger.cpp	(.../Logger.cpp)	(revision c9f8f8cf3c6c37fc6460d8675c62c9442c4d4263)
+++ sources/storage/Logger.cpp	(.../Logger.cpp)	(revision e64766e5551e32c3ffd55c6b1fcb222128a1c325)
@@ -321,8 +321,10 @@
     if (logPathName.isEmpty())
         logPathName = _logPathNames[eLogDebug];
     _logFileName = logPathName + fileName;
-    FileHandler::write(_logFileName, mContent + "\r\n", true);
 
+    bool isWritten = FileHandler::write(_logFileName, mContent + "\r\n", true);
+    if(!isWritten) emit didLogIOFailed();
+
     // console out the log if enabled.
     if (_enableConsoleOut) {
         qDebug().noquote() << mContent;
@@ -436,6 +438,12 @@
     // disabled coco begin validated: This needs user interaction to export to USB device
     // has been tested manually
     LOG_DEBUG(QString("Export %1 ended: %2").arg(_logNames[_exportLogsType]).arg(_exportLogsWatcher.result()));
+
+    qDebug()<< "_exportLogsWatcher.result()" << _exportLogsWatcher.result();
+    if(!_exportLogsWatcher.result()){
+        emit didLogIOFailed();
+        return;
+    }
     emit didExportLogs();
 }
 // disabled coco end