MacBook Pro (17 inch, late 2011), OS X Yosemite 10.10.3, 2.4 GHz Intel Core i7, 4 GB 1333 MHz DDR3, Logic Pro 9.1.8, Apogee Duet Firewire Hi Everybody, Iâ€™ve looked here on the LUG and elsewhere and canâ€™t find a clear cut answer. Iâ€™m a voice actor and canâ€™t work because of this problem: I recently upgraded to Yosemite 10.10.3 from Lion (I think it was 10.7.3). Since then Iâ€™ve had no trouble recording on Logic Pro 9.1.8. -- Until today. I can launch a new project, name it, but when asked to save it to a destination Logic crashes. I tried opening an old project and it opened. I recorded a test track there, edited it, but when I went to bounce the track, Logic again crashed. Most fixes are way above my head. Some suggestions on posts include removing LP9 preferences and reinstalling 9.1.8 but I havenâ€™t tried those. I did try unchecking the â€œopen in 32 bitâ€ box but that didnâ€™t work and there doesnâ€™t seem to be a way to change to 64 bit. I've removed com.apple.logic.pro.plist and com.apple.logic.pro.cs, restarted, and that didn't work. I haven't upgraded the Duet software to Yosemite, yet. Iâ€™m discovering that my best recourse is to upgrade to LPX 10.1.1. My questions are these: (1.) Is there a fix for 9.1.8? (2.) If I upgrade to LPX will I lose my plug-ins, keyboard shortcuts, etc.? (3.) Will LPX allow me to use 9.1.8 so I can return to saved projects, or are 9.1.8 projects dead to me? I have Time Machine and an external drive, but going back to Lion to run old projects is daunting (and scary) to me. Iâ€™ve attached a crash report. Your advice is greatly appreciated.