AbleCommerce Shopping Cart Software

I'm testing out an install on a VPS now. GoDaddy is too restrictive and not enough firepower. Anyway, I'm getting the following error when trying to go to http://www.mydomain.com/Install/Default.aspx

I used my ftp tool to change the file permissions for everything in the directory to be 0777. Any other ideas?

Configuration Error
Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

It seems that your application is referencing some assembly which is either missing, or this reference is wrong probably because of some invalid configuration in web.config file. This may be because of missing AJAX Extensions.