'An Unrecoverable error has occurred'.
Solution
If you get this error message, please send us your Dock and Revit log files for investigation.
Dock logfile: C:\Users\%username%\AppData\Roaming\TOOLS 4 BIM\*Revit version*\LogT4BDock.txt
Revit Journal: C:\Users\%username%\AppData\Local\Autodesk\Revit\Autodesk Revit *Revit version*\Journal.xxxx.txt