My Mac Pro keeps shutting down to black screen. Here is report. Help please.

[Nickoliath]

The Mac Pro I've been using in the studio keeps having a kernal panic and shutting down to the black screen where I must hold down the power button to restart. I saved the error message upon rebooting and was hoping someone on here could shed some light on what's going on. I'm running OSX 10.4.11 on a fully upgraded Mac Pro with 16 GB of ram.
Here is the message as follows:

panic(cpu 1 caller 0x001A3135): Unresolved kernel trap (CPU 1, Type 14=page fault), registers:
CR0: 0x8001003b, CR2: 0x00000134, CR3: 0x01090000, CR4: 0x000006e0
EAX: 0x1484b600, EBX: 0x004ea7bd, ECX: 0x00397a6e, EDX: 0x1484ce00
CR2: 0x00000134, EBP: 0x551a3c98, ESI: 0x1484ced4, EDI: 0x13833db8
EFL: 0x00010246, EIP: 0x00000134, CS: 0x00000008, DS: 0x00000010

Backtrace, Format - Frame : Return Address (4 potential args on stack)
0x551a3a28 : 0x128d1f (0x3c9540 0x551a3a4c 0x131df4 0x0)
0x551a3a68 : 0x1a3135 (0x3cf1f4 0x1 0xe 0x3cea24)
0x551a3b78 : 0x19a8d4 (0x551a3b90 0x5342fc 0x551a3bc8 0x399342)
0x551a3c98 : 0xaea907 (0x1484ce00 0x4ea7bd 0x0 0x1)
0x551a3ce8 : 0xaeb559 (0x139e0f00 0x0 0x4ea7bd 0x0)
0x551a3d18 : 0x3b0844 (0x14734100 0x13833dac 0x140bb594 0x1c)
0x551a3d68 : 0x18a187 (0x14734100 0x4 0x13833dac 0x1c)
0x551a3db8 : 0x12b4da (0x13833d84 0x140bb56c 0x0 0x0)
0x551a3df8 : 0x124b2b (0x13833d00 0x0 0x48 0x551a3edc)
0x551a3f08 : 0x1955a1 (0x551a3f44 0x0 0x0 0x0)
0x551a3fc8 : 0x19ad4e (0x145b4d80 0x0 0x19d0b5 0x14104000) No mapping exists for frame pointer
Backtrace terminated-invalid frame pointer 0xb0283908
Kernel loadable modules in backtrace (with dependencies):
com.motu.driver.USBMidiKext(1.3.4)@0xae9000
dependency: com.apple.iokit.IOUSBFamily(2.6.1)@0x530000

Kernel version:
Darwin Kernel Version 8.8.1: Mon Sep 25 19:42:00 PDT 2006; root:xnu-792.13.8.obj~1/RELEASE_I386

 

[Spawn_Dooley]

com.motu.driver.USBMidiKext(1.3.4)@0xae9000

Did you follow the advice to download and install a new MOTU driver in your thread over at the Apple Support Communities forum? Reseating your RAM or removing them and adding them back until you see a repeat of the Kernal Panic was also suggested, have you any luck so far?

RAM problems did not show up until nearly 40 loops of the Extended Hardware Test, so run the Extended Test in Loop Mode by pressing Control-L before starting the test..

 

[Kaveman]

I had a problem with the com.motu.driver.USBMidiKext panicking on a MacMini, easiest fix was reinstalling the OS.

 

[Spawn_Dooley]

Backup your important stuff to external HD then you can use Migration Assistant to bring back your files and settings once you've done the reinstall.

 

[Nickoliath]

Thanks for the quick feedback. I will first try to re-install the MOTU driver and see if that fixes it. If that doesn't work I will then try to re-install the OS.

 

[Spawn_Dooley]

Let us know how you get on ....

 

[Nickoliath]

So I updated the MOTU driver for the MOTU MIDI Express XT and have had no kernal panics so far after two days of studio work
Thank you Spawn-Dooley and Kaveman a million times over for your help. I can now get back to mixing instead of trying to iron out tech problems.
Thanks again and I love it that you can find help like this online.