I don't know if there was an update. But that means there were 3 updates within about a week, because one made it not work, the next one it worked again. Then the 3rd made it not work again.

There have been 100s of updates over thee years. Why all of a sudden do they prevent only ONE speaker from playing, and ONLY in RB, not BIAB or PT. Or any other software I use?

I could understand it, kinda, if an update killed a stereo function, and you only got mono. That could make sense. Both speakers would still work.

But what can you possibly do in ANY computer program to disable one speaker?

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