Logic Pro 9 Logic Pro 9 midi-crash!


New Member
Hello everybody!
I have just bought one of the new iMacs (21,5", with 3,33Ghz and 8Gb Ram).
Installed Logic Pro 9 (3hours) and everything seemed to be OK.
But now: I still don't have the audio interface (my old Mbox isn't compatible with Snow Leopard), so i opened Logic using my usb keyboard (M-Audio 49 Oxygen).
The PROBLEM: After playing during 5 minutes with the virtual instruments and checking different instrument galleries, the complete OS crashes suddenly!
The screen remains black with a distortion image of the program in the center of the screen, and the computer starts to emit beeps. (And I have to force the shut down.)
I did also reinstall the whole OS and Logic software, but it didn't fix nothing.
Right now, I opened 3 times Logic using the keyboard and it crashed all 3 times after those 4-5 minutes playing! :confused: !!
Does somebody know what is happening wrong? Any suggestions??
Thanks in advance!


If it's a brand new mac and a brand new OS and software install; evidence points to probable hardware or ram problems.

You could try zapping the P-Ram; but your best bet at this point is probably to just bring it back to where you bought it and exchange it for another one. It's a blessing that this is happening now - when it is brand new, before you have too much invested in terms of time and installing software, and Logic songs in progress etc.
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New Member
Thank you for the reply!
Finally the main problem was with the USB ports.
I made also some system checkings and then it always crashed.
So the problem was with the hardware. And finally I'm going to replace this machine for a new one.., let's hope this next will be OK! ;)
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