If any Native Instrument RTAS plugin and Autotune RTAS is in the Digidesign plugins folder, then Logic crashes a few seconds after launch. Autotune TDM (like about 60 other TDM plugins) can exist no problem. And many other RTAS plugins can exist fine (all Digi, Universal Audio, Ivory, TL etc..) in that folder. But Logic doesn't even use RTAS, so why should Logic even care about these? ProTools software works 100% perfectly with every plugin. The temporary solution is to move these plugins to the disabled folder, but that's a hassle because ProTools HD is used also in this rig half the time and then we have to move them back and forth.... Logic Pro 9.02 ProTools HD 8.01cs1 HD2Accel UAD-2 Quadra PCIe OS 10.6.2 new MacPro 8core from December 2009.