On Mar 31, 2004, at 1:54 AM, Frank Shearar wrote:
>
> Next I get prompted to save my changes to the Tests package. I get a
> progress indicator saying "Snapshotting..." and just after that 
> progress
> indicator finishes I get the mentioned walkback (see the attached log).

This looks like it's probably an issue from Chronology (or maybe 
ANSICompatibility) not updating existing instances when it changed 
Date.  You've probably lost the actual date information, but you can at 
least make the instances valid by doing something like

Date allInstancesDo: [:ea | ea start ifNil: [ea copyFrom: Date today]]

Cheers,
Avi