VideoTrack,
Thank you for trying/suggestion. I ran biab as admimnistator,
stylepicker:
"The Style Master List needs to be updated for new styles etc..."
agreed.
Opened stylepicker again, same dialog:
"The Style Master List needs to be updated for new styles etc..."

P.S. I do not know if this situation causes the issue:
I moved Realtracks and Drums to another hard drive on computer because I was running low on space on primary drive, but I pointed them to correct paths in biab.

I get dialog every time I open stylepicker.

Anybody knows how to fix this?

Thank you.