Bentley Microstation V8i: 08.11.05.17
Bentley Mechanical Systems: 08.11.05.27
Microsoft Windows: Vista Ultimate 32Bit
The first thing I'd try is using the keyin BMECH REBUILD to see if that helps.
Interesting.... What version did you upgrade from? It seems odd that you needed to do this just now. I didn't think BBMS V8i "changed the game" in that area of the dataset.
Yeah, that is a fairly big jump.
But I guess the most important thing is that you have things in working order!