Just installed to 2.65 and

Get this error

We're sorry, an internal error occurred that prevents the request to complete.

Hi rdub,

Troubleshooting guide:

1. Go to yourstore.com/admin and go to System -> Log and inspect the Errors.
2. If you can't access the administration you have to change your Web.config file by replacing RemoteOnly with Off:
<customErrors defaultRedirect="errorpage.htm" mode="RemoteOnly">
to
<customErrors defaultRedirect="errorpage.htm" mode="Off">

Once you got the error it is much easier to know what is wrong.

Thanks!