When trying to move an InfoPath from Prod to Test, I ran into a small problem.
Once I got to the point of needing to update my data connections, I received this error:
Operation could not be completed
The amount of detail is overwhelming!
The url for my test site was http://sharepoint:1200/sites/blah
After creating a new web app and having the network guys create a new DNS entry, the error went away.
The new url is http://test.sharepoint.com/sites/blah
Updated my data connections, no more error!