Vegas Pro 11 won't install - 1603 error (Win 7 64)

HugoM wrote on 3/12/2012, 12:26 PM
I have been using Vegas Pro 10 without incident. Finally, I went to install the version 11 that I bought as an upgrade when it was first released, but I get this error:

"ERROR: 1603 occured during installation

Could not create key: \.ogg\vegas110_ogg\ShellNew. Verify that you have sufficient access to that key, or contact your support personnel."

I have tried rebooting, disabling antivirus, installing as Administrator, installing from DVD, installing from most recent downloaded file -- nothing works.