Guides
Where are exception logs and mini dump files located?
You should be able to find your exception.log and miniDump.dmp fliles in the following location:
C:\Users\<your name>\AppData\Local\Temp\Bentley\AECOsimBuildingDesigner\8.11or 10.0\ExceptionHistory\ExceptionHistory-1
The configuration variable that controls this location is MS_TMP.