A reload task in QlikView fails with the following error in the task log:
Error The sourcedocument failed to save.. Exception=System.Runtime.InteropServices.COMException (0x80004005): Error HRESULT E_FAIL has been returned from a call to a COM component. || at QlikView.Doc.SaveAs(String _FileName, Int16 _Format) || at QVBWrapper.Document.Save(ILogBucket i_LogBucket, String i_SaveAsFileName)
This may be caused by an active virus scan locking the relevant files, or an invalid alert configured on the task.