Strange sysex sent to all MIDI devices on startup of Logic Pro

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Level 1

9 points

Strange sysex sent to all MIDI devices on startup of Logic Pro

I have a Soundcraft Ghost 32 with a center section that supports MIDI machine control, so I have it hooked up to my Logic rig. Unfortunately, if I have the MIDI cables connected when I start up Logic, the Soundcraft's center section will display "Loading" in the SMPTE field and stop responding to commands. I hooked up MIDI monitor to see what is going on, and it turns out Logic is sending a metric truckload of unknown SysEx messages out to all MIDI devices when it is started up (and at other random times). I have reset all control surface configuration, that didn't seem to do any good.

Attached an image of the data seen in MIDI monitor.

MBP 17", Mac OS X (10.6)

Posted on Mar 20, 2012 10:59 AM

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Answer 1

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Pancenter

Level 6

14,644 points

Mar 20, 2012 11:58 AM in response to e-x-e-l

Sounds like a corrupted control surface preference file.

Delete com.apple.logic.pro.cs

It's in your User/<yourname>/Library/Preferences folder.

Next time Logic boots it will re-create the file.

Also, under Settings/MIDI uncheck the "Send Used MIDI Settings After Loading"

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Answer 2

e-x-e-l Author

Level 1

9 points

Mar 20, 2012 1:45 PM in response to Pancenter

Hi,

Nuking the pref file didn't have any effect. For the other setting, I only have a "Send Used Instrument Settings On Reset", which is unchecked. Or I'm unclear what area of the preferences you're referring to.

I agree that it really walks and quacks like Logic trying to initialize some control surface.

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Answer 3

Pancenter

Level 6

14,644 points

Mar 20, 2012 2:44 PM in response to e-x-e-l

It's under Setting/MIDI not Preferences/MIDI

Settings are on a per song basis.

I'm going to check and see what kind messages I'm seeing sent out.

JSCooper and the Universal are Control Surface formants.

When you click on the Preferences Icon you should see some Control Surface selections near the bottom of the pop-up window. Have you gone through all of those?

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Answer 4

Pancenter

Level 6

14,644 points

Mar 20, 2012 3:08 PM in response to e-x-e-l

I'm just seeing the usual, a series of Note Off messages, no Sysex.

Seems like Logic is seeing the Soundcraft as a control surface and loading what it thinks (Universal) should work.

What happens if you uncheck MIDI Machine control in Logic?

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