When using a Universal version of Logic, GarageBand, or any other application that supports Audio Units on an Intel-based Macintosh, PowerPC versions of Audio Unit plug-ins are not available. All plug-ins must be compiled for Intel, so you should consult with the manufacturer of the plug-in to see about obtaining a Universal version.
Note: Users facing this scenario with large collections of PowerPC-compatible plug-ins may be tempted to force a Universal application to run under Rosetta. You should avoid this temptation and allow the Universal application to run natively on the Intel-based Mac as designed.
Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple's recommendation or endorsement. Please contact the vendor for additional information.