Deddy,
Is it possible that it is connecting to an old workspace cache? If you delete the cache(s) and restart the WWGM does the error go away?
Typical cache locations:
- %PTC_WF_ROOT%
- %PTC_WLD_ROOT%
- %userprofile%\AppData\Roaming\PTC\ProENGINEER\Wildfire
- %userprofile%\AppData\Roaming\PTC\Windchill Workgroup Manager
- %userprofile%\.wwgm