Problems with termbases in Studio 2014, "general massive catastrophic system failure"

Studio does not connect to existing termbases any more (terminology recognition does not work any more). It also refuses to accept a termbase when I create a project, reporting a "general massive catastrophic system failure". I can still work with translation memories but not with my termbases any more. I had upgraded to Windows 10 recently, but Studio worked fine with it in the beginning. Can anybody help?