Trustingly upgraded to ver 3.0 just now.
Should have known better.
Should never use a software version ending in .0 !
Upgrade crashed my first system.
Several error messages and Slimstat disappears from the top line.
So finding no way to reinstall it I decided to examine deleting it but keeping the data.
Carefully examined all the files it said it was deleting.
Since no data files were included -- I gave the delete click.
Data ALL gone !
Not satisfied with crashing one blog I tried the upgrade on another.
Exact same error message and crash.
Learned something as I"m not going to delete these files.
Don't know what I'm going to do -
except maybe wait until they issue a bug fix.