Apple has released version 9.1.1 of Logic.  There are several items listed in the release notes.

Not sure why Apple thinks this is necessary…

“Newly created software instrument tracks now include an EVP88 instrument plug-in by default.”

More information on the update here.

If you are brave enough to run Logic in 64-bit mode, you may notice that the updated plugins do not show up under the 32-bit AU menu after the 9.1 update.

This behavior is expected and the solution is to open Logic in 32-bit mode so the updated plugins to be scanned and validated. The next time you launch Logic in 64-bit mode, the updated plugins will be available.

After our thorough scientific analysis (read, “Playing with Logic for a couple of hours”), we believe that it is safe to update to v9.1. We do have a few recommendations that we have outlined below.

We recommend that Snow Leopard users continue to run Logic in 32-bit mode until more plug-ins update to 64-bit. Even though you can run plug-ins in 32-bit mode, we experienced more crashes than should be expected on a pro setup. In our testing the benefits of the additional memory available in 64-bit mode did not outweigh the cons of the crashes. When running in 32-bit mode, Logic seems to load more quickly and doesn’t appear to be any less stable than 9.0.2 in our testing.

We will be monitoring the popular Logic discussion venues and stay on top of the issues that other users find with the update. In the mean time, we will definitely be utilizing the support for longer file names to keep our files organized. If you have any suggestions for users who haven’t upgraded yet, leave them in the comments.

Apple has released version 9.1 of Logic Pro. The update is available via Software Update. This update adds 64-bit support for Snow Leopard users although all features are not available in 64-bit mode. We are downloading it now and installing. We will report back and let you know of any issues we encounter.

Additional information available here.

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