I have installed the new version of FCP 10.2 on my iMac and MBA and both instalments are crashing on launch. I have tried deleting preferences and have reinstalled FCPX on both machines. Any idea what the problem may be and how to resolve it?

Question

FCP 10.2 on my iMac and MBA are crashing on launch

Answer 1

I had the same crash type as Pajero Fan and Kidago, except my machine is a iMac mid-2011 12GB RAM, AMD Radeon 6770M, Yosemite 10.10.3 fresh install and FCP 10.2. My crash was very similar to the AMDRadeon but mine is with the AMDRadeonX3000GLDriver.bundle.
Crashed Thread:        4  Dispatch queue: NSOperationQueue 0x600000c26840 :: NSOperation 0x600000a593e0 (QOS: USER_INITIATED)
Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000196aa1003
VM Regions Near 0x196aa1003:
    Image IO               0000000196a9e000-0000000196aa1000 [   12K] rw-/rwx SM=PRV 
-->
    __TEXT                 0000123480000000-000012348029b000 [ 2668K] r-x/rwx SM=COW  /System/Library/Extensions/AMDRadeonX3000GLDriver.bundle/Contents/MacOS/AMDRade onX3000GLDriver
I created a new user account, and FCP 10.2 launched and works fine. However, using 3D Text gives an FCP warning that my hardware is not capable of doing 3D text.
Back as my original user account, I did a Repair permissions and found a TON of group/user issues such as,
User differs on “System/Library/Extensions/AMDRadeonX3000GLDriver.bundle/Contents/PkgInfo”; should be 0; user is 502.
Group differs on “System/Library/Extensions/AMDRadeonX3000GLDriver.bundle/Contents/PkgInfo”; should be 0; group is 20.
(BTW, user 502 is the UNIX name for the new user account I created.)
That DIDN'T fix it.
Using Find Any File I was able to delete the "Layouts" folder, and FCP launches ok, but any attempt to start a new project, import a file, results in a crash. Maybe related to the 3D text feature.