Could you Zip the MicroStation Temp directory and either post here for review, or private message me the necessary files? Once received I can review the ExceptionHistory events and the associated Exception.log and Minidump.dmp file(s) to try to identify the source of the problem.
MicroStation key-in to open Windows Explorer in the user configured MicroStation Temp directory
1. Key-in: $ % explorer $(MS_TMP)
2. Zip the entire directory (e.g. _dMmaOKrOBZUzT62asU91Q) and submit for review
HTH,
Bob