Hello -

We've developed strange problems out of the blue today:

1. In AE CS6 or CC and only in AE, when we attempt to import or do a "save as", the window that opens after executing the keyboard command (from the menu's) closes almost instantly.    The window opens for a second and then it's gone.

2. When moving a file from the project window into the composition, the project crashes with the error message: "Undo group mismatch"

Tried dumping the prefs, restarting the machine, etc.

Running Mavericks - up to date

All app versions up to date.

Latest iMac.

Happened in CS6.

Downloaded CC and it happened again.

Mystified and under the gun...

Any ideas?

Thanks.

Matthew