After installing Safari 4 Public Beta in Mac OS X v10.5.6, Mail may unexpectedly quit when opened if a third-party Mail plugin is installed.

(Via Most Recent.)

Did you install the new Safari 4 Public Beta, and now your Mail application keeps crashing? It could be because you have GrowlMail installed. Try disabling Growl to see if it helps your situation. Or better yet, remove GrowlMail completely.

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This is a follow up to the bit I posted last week about Mail.app hanging — usually at login/startup/wake, but then at other times for no reason in particular. My original post blamed the problem on iCal syncing To-Do’s with Mail (which I personally don’t like).

An update to that post later shifted the blame to GrowlMail. I can confirm — without a doubt — that GrowlMail has a problem with IMAP email accounts under Leopard, both on Intel and PPC based machines. While you could simply turn GrowlMail off in Mail preferences, my recommendation is to completely remove the bundle until it can be fully updated for compatibility. Note: a new version of GrowlMail was released a few days ago that supposedly addresses Leopard issues. However, my testing found it to still have lingering problems, so I promptly uninstalled it.

If you have GrowlMail installed, it can be uninstalled by removing the following files from your hard drive:

/Library/Mail/Bundles/GrowlMail.bundle
/Library/Receipts/GrowlMail.pkg
/Library/Receipts/growlmailPreflight.pkg

Since deleting those files, I’ve had no trouble with my IMAP account in Leopard Mail whatsoever. It should be noted you’ll probably have to authenticate as an administrator to remove the files.

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