Wow. It's somewhat reassuring to know that I'm not the only one. Here's my issue:
iPod is saying there is "no music" on the iPod. Yet, when you view the settings and files it shows there to be 70GB worth of data - that is how much music I have. iTunes is also not recognizing iPod either. I also get an error stating:
"iTunes cannot read the contents of __ iPod. Go to the summary tab in iPod preferences and click RESTORE to restore this iPod to it's factory settings". It's also not reading anything from the Music database.
This is the 3rd time I've had this error in the past two months. It happened in August - I noticed it had happened as I disconnected my iPod from my computer. The first time was when I tried to eject from iTunes. It said the files were currently in use by another program (I had nothing running, what program?), so I "safely removed" as I would a USB device. The 2nd time happened similarly, though not before iTunes locked up totally and would not let me eject from there. The first time I had this problem, I also removed each file/folder manually from iPod control, to hard drive, and restored iPod, and put them back on iPod. However, on the 2nd time I was not so fortunate as it gives me an error when I attempt to copy stating either the "parameter is incorrect", or "cyclic redundancy error". Some of these files that are giving me this error at some point during the process have been accessible and working fine, and other times they are not, as I successfully copied five folders worth of data without error, then after I started getting errors with the next folders, attempted to copy one of the same folders into a different directory, which THEN gave me an error. I'm not sure what's going on here, but this is proving to be quite the pain and never experienced these problems with my 60GB iPod, which I did not take nearly as good of care as I have this one - and is still working with all of my original music on it.
Note that I posted this a few weeks ago and received no answer. I managed to restore about 5000 songs back onto my iPod. Then today, my iPod was playing and the song started skipping, then just stopped playing alltogether. Then iTunes locked up. So I terminated the program. Then I tried to open iTunes again. iTunes WOULD NOT open for a while, then I finally got it to open. Then it wouldn't read my iPod AT ALL. So in order to do so, I safely removed from my system, and well, ended up back where I was to begin with. FML indeed. I've been reading about iTunes 9 having a TON of errors, so I've uninstalled it. Now I've tried to downgrade to iTunes 8.2.1 but it won't run because when I install it, it says it's missing files! This is the 3rd Time! Apple, get with it!