Sometimes the messages you get from the event log or dStyle log are not enough to find out where a certain problem is.
Then you can enable vsto notifications, which give a popup at the plug-in.
Boot cmd in administrator mode. Give the command 'rundll32.exe sysdm.cpl, EditEnvironmentVariables' and enter.
For System Variables, enter a new command:
Variable name: VSTO_SUPPRESSDISPLAYALERTS
Value variable: 0