I thought that might be the case, but I don't believe it is because I have other 4.5.1 clients that are updating. I believe the difference is the HR42 Hotfix for 4.5.1. Not all of my clients received the hotfix, since I was advised to push it only when the client exhibited a certain problem. Now, when I try to apply that hotfix it says Upgrade failed. All connections failed. I have been successful in upgrading some of them to 7.1 but did not want to do it wholesale yet because I am upgrading to 3.0.2 EPO in the next month and this seems like double work.
Any ideas out there?