Logic 8 with I/O on aux, blips/bleeps/chirps - Help? Please?

Question

Hi Guys,
I realize now and after performing some more diagnostics last night how to further narrow down my issue.
First of all, here is my Setup:G5 Quad 2.6ghz (I think), 6G RAM, 3 HD's (one is empty), a 4th external for time machine.
MOTU 828 MK2 firewire (all 8 analog I/O loaded with something - compressor, filter, EQ, 2 pedals). The firewire had to convert from 400 to 800 at the G5 because they no longer ship with FW400. Midi controller is an Evolution Mk449C (again, I think, I'm away from comp.)
Here's my issue:
1) I'll start off with a multi-out Utrabeat or what-have-you.
2) Then I'll put the Kick, snare and HH, to their own Aux channels, and assign the UB outs accordingly.
3) Then I'll use the I/O plugin on say the snare, and set the input/output appropriately.
* Everything works fine - The snare, for example, makes no weird chirping/blipping sounds.
4) HOWEVER when I add any other track after this, the channel with the I/O goes blippy/chirppy . . . added to this, the timing on the snare goes WAY out of wack. This also occurs when I run the outputs of several channels to an Aux, and set an I/O on that Aux channel. From what I can tell it only happens with Aux channels, and happens with any of the outboard gear I use..
What I have tried so far:
- Resetting the MOTU with the FW cable unplug. ( There's a way you can do this.)
- Moving the logic preferences files to my desktop.
- Increasing my buffer size to 1024 - this works to get rid of the the bleepy sound, however the time delay on the snare is still totally screwed.
- I have also tried using a logic preset template, and it still does this. ARghhh!!!!
* My computer at home is without internet, so I will also try to DL the MOTU updater at work and burn to a disc on the weekend.
- Anothe odd point is that this has only been happening as of a week or so ago . . .
Could someone PLEASE help me shed some light on this?
I am not sure if it's Logic, my MOTU or my comp? I do think it's weird that such a string computer could have this sort of trouble???
Thank you in advance,
Tyler.

Answer 1

I should also point out:
Two things that only serve as small fixes.
1) I can jack my I/O buffer size to 1024, that gets rid of the sound, but the midi response is terrible afterwards.
2) I can bounce out the midi as audio however I've just spent $4000 on my new G5 to avoid having to do this. See first post. Apart from this it makes the signal uneditable later on.
Of course, this has only just started happening these past couple weeks. If I purchase Logic 9, would this fix my problem? Also - I'm not 100% but my suspicion is the problem lies in Logic, not my Motu828. I've reinstalled the MOTU software, and reset the inteface. I suppose I should also point out that working with auc channels like this has always been a huge part of my work flow, so again I find it odd that it's just started to get like this.
Again, here is the scoop -I'll start with any multi-out pluign (UB, EXS24, etc), and then assign sounds to discrete aux channels. I'll set the input of the aux channels to correspond with the appropriate source.
Now I'll use an I/O plugin to to get an analog filter (for example), on my snare. EVERYTHING is fine until . . . . I make a new instrument track. The aux channel that the I/O on it sounds like a burst of PCM noise. Very digital, almost like it's been pitched WAY up.
Guys I'm not trying to be a pain here, that's the last thing I want, but this has been killing me for the past couple of weeks. So could someone PLEASE help me out?
Thank you!
Tyler.