HTTP 500.100 - Internal Server Error - ASP error

# Error Type:
Server object, ASP 0177 (0x800401F3)
Invalid ProgID. For additional information specific to this message please visit the Microsoft Online Support site located at: http://www.microsoft.com/contentredirect.asp.
/CoxAxis/adminEditPage.asp, line 6

My code:

<%
dim self, pid, i, c
self = Request.ServerVariables("URL")
pid = Request.Querystring("pid")
set Session("pageContent") = Server.CreateObject("Scripting.Dictionary")
Set custObj = Server.CreateObject("NFIFunctions.ValidateField") Line 6
set psi = Session("pageContent")
set errDict = Server.CreateObject("Scripting.Dictionary")
i = 1

Well, either "NFIFunctions.ValidateField" has a typo in it, or more likely this object isn't installed on the server. This isn't an IIS problem.

Waht do you mean. someon else told me that I would need to register the used .dll file

by doing this

regsvr32 component.dll

Then run

IISRESET

that will restart your web services.
Everything I found about this error arrays around register .dll file associated with SQL Server

So register the dll. It's still not an IIS problem that a component your code is trying to use isn't installed on the web server.