Runtime Error R605

Anybody else get this Microsloth Runtime C+++ Error?Had a nice flight going out of San Diego, flew VFR up the coast to John Wayne County airport and literally just before touchdown Microsoft's reality hits me in the face with a dialogue box;Runtime Error!R605-pure virtual function callEgads! The only option (of course) is to hit the "Okay" button which in turns causes the CTD which in turn causes me to sit here typing.Microsoft "support" describes what is happening in terms I have no clue of, and on top of that of course they can't put it in English as to a fix either. Never had that happen before. Can't fly any more tonight so I can't see if I can duplicate it or not. Wifey wants me to go away to bedroom and perform "some pure virtual functions".Probably just one of those things you live with from time to time I guess.