Does anybody know what Error -50 is?

Question

I'm having all sorts of problems with iTunes 7.0. When the update came out I applied it and got better results, but when I came back to the office today, iTunes informs that that
'The iTunes Library file cannot be saved. An unknown errir [-50] occurred'
And this is on a Mac!
Anybody know what the heck that means?
I am pretty sure that my previous issues were related to the size of the library [at 30,000 tracks it's a lot but not at all unusual]. But this has me stumped.
–ms
G5 Dual 1.8, T-Book 667, ABook, iMacs, Nikon D70s   Mac OS X (10.4.7)  
G5 Dual 1.8, T-Book 667, ABook, iMacs, Nikon D70s   Mac OS X (10.4.7)  

Answer 1

Well, I hope my experience helps someone in future as it appears nobody knows the answer.
But apparently this has to do with problematic files- either the file itself, or the file name, not sure.
How do I know this? because Finder also barfs on the same files. I was copying 30k+ tracks to a new drive and as iTunes was balky I decided to do it with Finder [yes, this creates other problems but at least it gets the files where I need them].
I tried selecting all of the tracks at once and dragging them, and letting Finder do the work overnight, but when I cam back in the G5 had gone into blower apoplexy and had to be restarted by pulling the plug. So, I started grabbing ever-smaller bunches of folders to narrow down the issue and to pitch the bad files. I did NOT try to identify the bad file, just the folder.
Michael Spencer