Is this a bug in Logic Pro?

Question

I use a MAC G5 with Logic Pro 7.2.1 - I play a Korg Triton through a Motu Micro Express Midi interface to access the sounds in Logic as well as my Ivory Grand Piano Plug In. A Mackie Control Universal is my interface.
Ever since I got geared up last March I noticed that when I changed files (song projects) from client to client during the course of the day that my Ivory track would show up transposed a step down. Not limited to the Ivory track sometimes a Bass track, maybe a Bass from Apples Jam Packs, would be transposed.
I never have messed with the transposition of any Logic track, I don't even know how to do that, but I have transposed a song or two in the Ivory Grand Piano Plug In Window.
It was my understanding that once you close the Logic file that it would remember the parameters of that file the next time you opened it.
Well something very telling happened yesterday. In the morning I worked on a clients song. It was a song that early on I may have transposed the Ivory track to help the singer. I closed out of that file and when I brought up a file of another client's work their Ivory track and their Bass track were transposed down a step. Keep in mind that the day before that client's track played down perfectly in the right key and I'm sure I closed the file with it in the right key. And obviously all the audio tracks remained in the original correct key.
Here's the kicker. Fearing that I would mess up my client's song I quickly closed the file without saving any changes and completely closed Logic. When I rebooted Logic Pro and reopened their file the Ivory Grand piano track and the Logic Bass track were in key again!
This has happened quite a few times to me but only now have I realized that completely closing down Logic fixes the problem. ie - If I just ping pong from one file to the next without closing Logic down I have this transposing problem on the Midi instrument tracks.
I'd like to remedy this because it's time consuming to close down Logic between every client. Any ideas? Thanks

Answer 1

InnoMan, I experience frequent problems with Logic Pro that require quitting and relaunching the application. I'd say in a typical 3-hour session working with Logic, I end up doing this about 4 or 5 times. The glitches I experience sometimes involve transposition of notes.
Tell me, when your track gets transposed, does it actually appear transposed, or does it just sound that way? In other words, does the region become magically set to transpose (say, set to +4 or something)? Or, when you go into the region, have the notes been moved?
If neither of these things is happening, but the track just sounds wrong, then that's a problem I've been having. I have a bass line that repeats throughout a track, and it's all in key (A). Recently, I moved that baseline further along in the track. I changed nothing. The first time I listened to it, it all sounded fine. Every subsequent listening, however, sounded like the notes had been transposed to a completely different key. The region had not been transposed, and the notes in the region are still in A. However, it sounds completely off.
I tried completely recreating the region, instead of using a copy from earlier in the track. That worked on the first listen, however again, subsequent listenings and the notes are off.
I'm guessing that upgrading to Logic 7.2.1 might make a difference (I'm using 7.1.1). However, Apple wants me to give them $50 for this experiment, and given Logic's reliability so far (pretty bad), I'm loathe to give Apple more money for this thing.
Anyhow, let me know your experience. Thanks.