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About Logic Pro 9.1.3

This update delivers improved general stability and compatibility.

Issues addressed with 9.1.3 include:
Resolves problems related to the support of Hyper-Threading

Issues addressed with 9.1.2 include:

Improved compatibility with 6 and 12-core Mac Pro systems
Support for iOS control surface apps that utilize the OSC protocol
REX files now supported in 64-bit mode
Improved compatibility with select Audio Unit plug-ins

The update is recommended for all users of Logic Pro 9.