Install on Hostgator not going well

[Rock*Star]

I am trying to get weberp install on our dedicated server at Hostgator. They use Plesk to manage. I have tried the install through the plesk admin as well as directly on the server. The result is the same. I believe that it is Plesk causing the problem. I have error msgs on for the install at http://simplycompliant.net/weberp
could someone take a look at the errors and give me some direction?

Has anyone experienced this?

I am a bit new to this, but I have installed a few times at hostgator without problem. I sort of followed Joomlamo's instruction.

http://joomlamo.com/joomlamo/weberp.html

I am actually starting another one right now. I always have to reread my directions ... not memorized yet.