So, I put some new anims into my Vista AO hud, same as I've done a hundred other times. They all work perfectly, until I'm near another avatar, in which case the animations I just put in (that are DEFINITELY there working when I'm alone) disappear, not even listed as options or giving any errors. They're just gone. When I teleport back home, there they are, they work just fine, and my avi immediately resumes one of the new anims. If I invite someone else to my home, the animations disappear again until they leave, or I walk far enough away (maybe 20-30 meters).
I've had some strange things happen in my time on sl, but this one... I just cannot fathom why, or how to begin fixing this. Any help appreciated.