I ran into this error in my lab setup, although my issue may have been slightly different. Heres what I did anyway:
- When I attempted to upload an ISO for the vApp template I received the same error message reported by Matt.
- Checked the Org VDC - found that it had errors during creation. I wasn't sure why so I disabled and re-enabled the Org VDC. This cleared all the errors and everything appeared to be working. (I think this was a false positive).
- Same error when trying to upload the ISO.
- Deleted and re-created the Org VDC. Noticed vCenter failed to create a folder called "testcloud-vcd" (the same name as my vCD virtual machine). Because my vCD VM was in the root folder, the new folder name would conflict with the VM name and not create.
- Moved the vCD VM into a new subfolder. Deleted and recreated the Org VDC again. No errors this time.
- Attempted upload - no problems.
Like I said, this might be a different issue to what you were having but hopefully this helps someone.
Regards,
Kyle.