After launching Mozilla 0.8, besides crashing three times, the URL bar was missing. Changing the theme in the preferences fixed it, but initially there was no URL bar -- the only way to open a page was to do command L (open web location). (Other than this I think it is great!)
could you create a new profile and see if that helps?
WORKSFORME Mac OS 8.6 build 2001022013. Marking WFM for now, please reopen if you see this in latest nightlies (reporter) or if someone else sees this. Reporter, try looking for this in a nightly with a new profile.