I'm using a Mac.  I was attempting to use a Hatch and ended up down a path that I couldn't seem to return from. So, I reset AutoCAD LT, which was apparently a mistake.  When I reopened my file, several hours work were gone, although it had been set to frequently save.  Also, when reopening the file, I get a message saying "Exception in acexperience.bundle.  ARX Command", which I don't understand.  Any way to recover my work?