Logic pro 9.1.2 freezes when opening and says quantize

Question

I created a track, and every version of it freezes when i open it, it loads and then it brings up a window that says quantize and then it freezes at that point. with every version I have saved except version 1. This arrangement is extremely important. please help.  it originally crashed and i didn't save the report, now i can't get it to crash again, now it just freezes.  I can create a video of all of this happening if that would help?
KenECB

Answer 1

I've experienced this bug and have determined how to replicate it; it's caused when you perform an Audio-to-MIDI Groove Template function in the Sample Editor Factory on a Flex-Timed (Quantized) Region.  Performing Audio-to-Midi Groove Template on a non-Flextime/quantized file performs as expected.
Here's a simple way to replicate the bug:
1. Create blank session, create 1 audio and 1 software instrument track
2. Import a drum loop into the audio track
3. Activate Flex mode, select Slicing on the drum loop
4. Select the software instrument track
5. Double click drum loop
6. In Factory, select Audio-To-Midi Groove Template, click 'Use'
7. Quit Logic
8. Relaunch Logic
The session now seems to be permanently corrupted.  After force quitting Logic, Logic will continue to try to load this session on relaunch so you have to use another session to launch Logic rather than just click Logic's icon.
I've tried deleting the quantized audio file and removing all undo and fade files from the session directory but the session still hangs upon opening, so the corruption seems embedded in the session file itself.
I've reported it to Apple.