Well, after you said, you tried for awhile to get the Right mouse button to fail, and had no problem, I decided to strip down my command, and see if it made any difference, and so far, it looks like it has. No idea why though.
I mean, the command worked fine for hours, without issue, till it didn't. Restarting VA always made it work again, very odd issue.
Anyway, I removed a feature from the command, making it less complicated, and so far so good. So, I guess it was my command, and not so much VA.
Thanks for trying to find the problem, I appreciate it.