Prophet 12 sync issues "Pre-Lag" in Logic

Just added a Prophet 12 to my studio set-up... I record midi tracks from the Prophet into Logic, then once I get it dialed-in I record the audio into Logic.
However - the audio play back from the midi tracks to the Prophet starts early and records early, requiring me to move the recorded audio into place. On top of that I am getting some minor glitching on arpeggios on the Prophet - but this is less of a concern. I tried adjusting the timing compensation in Logic but this has had no effect. My Virus TI has the same issue, but not nearly as drastic. I am not using any midi interfaces - the Prophet, Virus, Analog 4 and Analog Rytm are all usb'ed into the computer. I have no timing issues with the Analog 4 or Analog Rytm. I also have midi thrus going out to my Machinedrum and Monomachine from the Analog 4 and Analog Rytm using standard midi cables and have no issues with their timing either - all is dead-on, no lagging or pre-lagging. The only real problem is the Prophet, and a little with the Virus. Any help would be wonderful
-Steve

I have to say the fact that the Audio 'pre lags...' is very strange indeed and I cannot think of why else this might be happening....
The fact it drifts too.. is very odd indeed....
My initial guess if it wasn't an Inspector setting... was its going to be something to do with your Audio Interface.. But the fact it only affects certain devices adds to my confusion and kind of rules out the audio interface itself otherwise it would affect everything.
That leaves an internal setting in Logic.. or your USB.. or the device itself... and I would have bet on it being a Logic Setting.. or some oddity to do with a Midi Interface... but you have checked everything I can think of that could could this.. and you are not using a Midi interface.. and you are not syncing to anything externally.... (You are not are you?) so I'm frankly, stumped!
I wonder assuming Pancenter has no further suggestions.... if someone like David, Erik or Jordi over on LPH.. might have a few ideas....
http://www.logicprohelp.com/forum/index.php
Might be worth a shot......

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hello Community:
I'm stuck in writing limbo now , due to a bizarre and never before seen problem in Logic 9.1.4
a Sync or internal timing issue.....for no reason of my doing, this is what occurs:
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Hey again Pan:
am still having this annoying issue of vanishing Audio regions in my Logic sequence
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Message was edited by: excLOUsiv

Ok, so I checked the SMPTE offset. I switched it so it will start at 00:00:00:00 or what have you. Good news is that the play head is no longer stuck. The first time I tried this I got an error message saying "System Overload. The Audio Engine was not able to process all required data in time. (-10011)" after about 8-10 bars of recording.
Next time I tried this I did I stereo pass of one track and it worked perfect. It recorded the whole sequence and the sync was perfect. It was only that one time. Now I can't even get the empty initial bars to go through without getting that error.
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Hello all,
This is a big one. Props to anyone that can tackle this.
I'm going to lay out our specs, then our issue.
SPECS
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Motu 24 i/o (2 of them)
Unitor8 Midi Interface
Big Ben Clocking
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Digi 002
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Is there a preference I'm missing somewhere? Something I'm overlooking?
Any help is GREATLY appreciated. Thanks in advance!
Sincerely,
The Earle-Tones Music crew
Dual 2.0 G5, 2.5 Gigs RAM Mac OS X (10.4.4) Logic 7.2 MOTU 24 i/o (x2), Unitor8, Big Ben Clocking.
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Hey Shwartz,
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Prophet 12 sync issues "Pre-Lag" in Logic

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