Trap on first use of existing Profile with seamonkey-2.35a1

Hi All

I have several Seamonkey Profiles.

After installing seamonkey-2.35a1 I notice that first use of a Profile 
with seamonkey always resulted in a C0000005 - Access Violation, 
File:xul.dll, Cause: Attempted to read from 00000000.

Every Profile worked fine with seamonkey on the 2nd attempt - and still do.

Is the above common or should I be looking for the cause of a problem?


Regards

Pete