I just tried opening one of my docs. I'm pretty sure this didn't happen with 1.6.0rc3:
TextClass.cpp(599): Error: Textclass 'amsart' is missing a defaultstyle. Error reading `[layouts/amsart.layout]' (Check `amsart') Check your installation and try Options/Reconfigure... Error: Could not load class ---------------------------------------- The document class amsart could not be loaded.
