Mac OS X 10.5: Mail unexpectedly quits with Safari 4 developer preview installed
Symptoms
Mail may unexpectedly quit if you have installed the Safari 4 developer preview.
Products Affected
Mail, Safari
Resolution
Uninstall the Safari 4 developer preview using uninstaller that is included on the Safari 4 developer preview disk image.
Additional Information
If you want to verify that Safari 4 developer preview is related to the Mail issue, you can review the Mail CrashReporter logs in Console for a "com.apple.JavaScriptCore" line such as this (other information will also appear in the logs):
com.apple.JavaScriptCore 0x970211c5 WTF::callOnMainThread(void (*)(void*), void*) + 37
This document will be updated as more information becomes available.