Mozilla Firefox crashing AIsnapshot

Thought this might be a good place to start regarding info.on firefox code.

Everytime I try to create an auto installer for firefox using Symantec's 
AISnapshot, it crashes aisnapshot.
the process involves taking a snapshot of your Windows System, installing 
firefox and then taking another snapshot.
AIsnapshot then takes the two snapshots of your system and creates an auto 
install package.
It is when AIsnapshot is going through registry the second time that it 
crashes.
Is there anyway of finding out what Registry settings Mozilla Firefox 1.0.6 
sets to try an narrow the problem down.

thanks in advance.