Hi Tom,
When the Windchill Workgroup Manager module was installed via PSI on the server was SolidWorks selected? It may be that you need to run the PSI again and select the SolidWorks applications when configuring the WWGM options because it doesn't look like that happened.
I have all the possible WWGMs installed on my system, but I believe this is the option you would need to explore:
Regards,
Lori