Dolphin Admin Panel not working from Plesk Install

I have installed Dolphin 6.0 using Plesk. The front-end of the site seems to work fine, but when I try and access the admin section the following happens... I log in for the first time and it asks for a key. I enter the key and submit that information. The page then says, please wait and then just hangs there. All additional attempts to access the admin panel just hang as well. Is there some setting I need to change in plesk? Any body elese ever have this issue with a plesk install? Is there any solution? Thanks!