Open Radar

 
Summary: After migrating a user account from Snow Leopard to Lion (GM), Mail rebuilds the ~/Library/Mail folder, moving the Bundles folder in the process, which effectively disables any installed Mail plug-ins. As opposed to previous releases of Mac OS X it neither tells the users nor checks, which versions of the Mail.app and the Message.framework the plug-ins support.

Steps to Reproduce:

1. Prepare a pre-Lion ~/Library/Mail folder, which containts plug-ins (i.e. bundles, such as http://lokiware.info/Attachment-Tamer ).

2. Migrate the user account from Snow Leopard to Lion. (It suffices to copy the pre-Lion ~/Library/Mail folder and com.apple.mail.plist file to a Lion installation.)

3. Launch Mail.app on the Lion installation and wait until it rebuilds the Mail folder.

Expected Results:

Mail should scan ~/Library/Mail/Bundles and check the SupportedPluginCompatibilityUUIDs key in their Info.plists. Then it should retain the plug-ins that support the current version of Mail.app and Message.framework, move the rest to a "Bundles (Disabled)" folder and tell the user about it--as it usually does when outdated plug-ins are detected.

Actual Results:

Mail puts the whole ~/Library/Mail/Bundles folder either into ~/Library/Mail/Mail Lost+Found or ~/Library/Mail/Mail Lost+Found or into ~/Library/Mail/V2 (I do not remember anymore), without checking the plug-ins or informing the user. This way even the plug-ins that have been updated to support Lion are disabled. What's worse, Mail does not tell the user about it.

Regression: --

Notes: --