The Client->Character->Flush Animations menu item crashes the viewer.
Please either remove it, disable (grey) it, or fix it.
Whenever I have problems with other avatars' animations at the exact wrong moment, I frantically go looking through the menus for a way to reset them . I find Flush Animations, hope it does something, click, and crash.
It's very annoying.
On this note, I would also like to request a way to reset all animations and textures on other avatars and objects.