I got error message 4001 when trying to upload music to imatch

I have also followed the above recommendations and have not been able to fix this issue.

Same here. I get the 4001 error after it says Waiting for Apple to deliver your results.

+1

Having the same problem. Have tried the solutions posted but no luck. I almost feel like it is a matter of Apple's server being busy. Each time I either get the error while "Gathering Informaion" or "Waiting for Apple results".

I have a feeling it has to do with us starting from a developer account. Was everyone using the developer beta before this?

I signed up during the dev beta, yes.

The only other thing I should mention is that I had disabled and reenabled Match on all the devices I used in the beta (MBP and iPhone) before I was successful on the new device (iMac).

yes i was also on the dev beta

I, too, was on beta and this error is really starting to sound like an issue with transfering over these types of accounts.

Did anyone else get this error when Apple deleted our libraries before Beta release 2 and Beta release 3?

I got this error immediately following the library deletions but it was solved by installing the latest Beta release. I thought that was the case when I received this error again but I went out and downloaded and installed the public release of 10.5.1 and still ran into the same 4001 error.

I've tried turning off all iMatch settings for all machines used during the beta (Macbook, Mac mini, and iPhone) and then re-enabling Match on the Mac but still get the 4001 error.

I was never a developer and have run into this error. Very frustrating, especially considering we're paying to use the service.

Same problem. None of these solutions fixed anything. I was NOT a developer prior to this general release. I have about 12,000 songs in my library. Tried running this in the middle of the night (in case this was an Apple server overload issue).

Knock on wood, but I think it might have been caused by my iPad being set to use Match. I turned that off, launched Music on it and waited for the "no music on this device" message, then tried again - haven't gotten the error yet, but it's still "Sending data to Apple".

Mine has also been "Sending data to Apple" for about 30 minutes. Not sure if it's a good sign, but certainly different from my experiences last night when I'd get the 4001 error after about 30 seconds. My 4s had Match turned off when I was trying last night, but now I have it on and as others have reported see my entire library with only the songs I've purchased in the iTunes store available for listening.

And we're back to 4001 errors.

I'm having these same problems too and i was not a dev i really want to use what i paid for though