My CE came in the mail today, so I tossed in the disc, ran the installer when prompted, and gave it permission to continue.

Shortly after the installer came up, I got the following message:

"Failed to read a required file. Please close all other applications, temporarily deactivate your anti-virus and try again."

I have done so on both counts, but I keep getting the error and cannot progress with the download.

I put in the key at my account page online and downloaded the installer from there, and ran it as administrator, and I still get the same error.

It's also been several minutes, and Agent will not disappear, nor will it allow me to end the process, preventing me from following the steps here:
http://us.battle.net/support/en/blog/5367451

Any suggestions?
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Resolved, see post here: http://us.battle.net/d3/en/forum/topic/5149175109?page=1#4
Edited by U1849KA#1588 on 5/15/2012 9:50 PM PDT