The Economy Plan with GoDaddy is not sufficient to run VP-ASP. You will need the Deluxe Plan at a minimum. We unfortunately cannot provide support for customers on the Economy Plan due to restrictions imposed by GoDaddy for users at this level. Also note that GoDaddy will not allow installation of additional COM objects that are required by some payment gateways.
Depending on the server GoDaddy has you placed on, troubleshooting errors can be difficult.
GoDaddy by default do not display the actual coding error message. They will normally advise you create a web.config file to allow the display of the actual error messages.
Since VPASP uses ASP Classic, the web.config file method will often not work sufficiently. After setting up the web.config file, instead of receiving a 500 error, you will likely see a message such as:
An error occurred on the server when processing the URL. Please contact the system administrator.
If you are the system administrator please click here to find out more about this error.
According to the following helpnote from Microsoft, you need to change settings on the server to allow the display of Classic ASP errors:
http://learn.iis.net/page.aspx/564/classic-asp-script-error-messages-are-no-longer-shown-in-a-web-browser-by-default/
This is something that GoDaddy will need to assist with.