See this chapter for troubleshooting related to com+ services.
Note: This chapter might be a troubleshooting for the 'version unknown' error in SynAdmin.
If you get an unexpected error message when restarting your com+ services, please remove all COM Surrogate processes in your task manager.

Unexpected error when restarting the COM+ services

Com Surrogate processes in task manager
Next restart the com+ services.

Component (com+) services
After that you can check via the WebOffice extensions 10.5 SP2 Standalone Testclient, if a valid version can be found.

WebOffice extensions 10.5 SP2 Standalone Testclient - check for version
Finally reload your WebOffice 10.5 SP2 application and the 'version unknown' error should be dissolved.