Emu XL-7 & MP-7 User's Group

Last night I was working on a new track in my XL-7, and when I went to 
save, I got an error mesage along the lines of:

SAVE FAILED:
ERROR COMMENT 110

Then it went to:

COMPACT USER DATA
CONTINUE, Enter??

The only option I had was to hit Enter, no other buttons worked.  it then 
spent about 10 minutes doing some sort of Compacting and was basically 
locked up until it was done.  So, what the hell was that all about?

rEalm