Multiclip Nightmare: General Error/Out of Memory when trying to match frame

Question

I'm an assistant editor on a reality show and am fairly experienced with Final Cut Pro. But I've never seen something like this.
At our post house, we have over 30 Macs running FCP7, streaming media off a Xserve/Promise RAID SAN via Fiber channel. We create multiclips for everything (it's a reality show) and have run into some weird bugs.
What's happening is that mutliclips will all-of-a-sudden be unable to match back to the original multiclip. It gives a General Error then an Out of Memory error. Sometimes, after those errors, FCP immediately quits. When I double click the clip in the timeline, I get the same general error. I can, however, match back to the original media clip. But matching back to the multiclip causes the error.
I can't pinpoint a cause or common element. It's happening to different episodes with different editors and different project files.
Also, randomly, things will go offline for no reason. And not everything in a timeline, just some things (which makes no since). We can reconnect them quickly since the media drive never went offline in the first place. I mention this because but I'm wondering if both of these problems are common symptoms of corrupt multiclips and if there's a way to fix them. The only element that I can find linking media randomly going offline is that these multiclips had subclips embedded in them. But even that doesn't seem to be a common thread.
These timelines have been passed around from story editors to editors to AEs then back to editors, so we're thinking these multiclips might be getting corrupted through that process. I don't understand why because everything's looking at the server and all the Macs are pretty much identical.
What I began to do was recut in each clip on the editor's timeline with the original multiclip. It fixes the problem but it's beyond time consuming to say the least. Now that these errors have come up three times in different places, I'm worried we have a widespread problem and if there's a better way to fix it.
Details:
We transcoded all the DVCPRO tapes with AJA Kona Cards to NTSC ProRes (LT) with plans to online the show once we lock
Everyone's running the latest FCP7 and Snow Leopard release

Answer 1

Nate Orloff wrote:
It seems that FCP is making HUGE multiclips. I'm guessing that's the source of the memory error. Some multiclips (the ones it'll let me open) are 9 hours long.
Interesting... Could be the source of your problem indeed
And for no reason.
Are you sure there's no reason? When making multilips there's not one clip's timecode passing 00:00:00:00 for exemple? Or a small clip is also selected with a complete different Timecode? Is it black all 9 hours long? etc.
There must be something that is causing these long multiclips.
I agree with Tom (down in this thread) that sending apple feedback with as much detail as possible might be helpfull.
[FCP feedback|http://www.apple.com/feedback/finalcutpro.html]
I would also be interested in an XML of one of the culprit clips. Not that I know answers, but looking at it might give some clue.
Please select one of the wrong multiclips (in the browser). Select File > Export > XML. (version 5, include metadata; Please also make a version 4 XML).
Send both XML to my email address (in my profile; click on my name in the left column of this post). No promises But you never know...
Rienk