Installing 2.1 after 3.0 beta

I had the 3.0 beta on a build server for a week or so, then uninstalled it when we purchased licenses for 2.1.0 enterprise. Now, when I try to run the msi for 2.1 I'm getting and error message "Windows cannot access the specified device, path, or file. You may not have the appropriate persmissions to access the item."

I'm wondering if there is some complication to going to the older version after having the beta installed, since we haven't run in to this on other machines, and I can, for instance, install the 3.0 beta again w/o issue.

RE: Installing 2.1 after 3.0 beta

There is no complication that we know of. Have you tried re-downloading v2.1?