We have been using the Microsoft Index Server for a while now to index documents
for our EMS but just recently it has stopped working correctly. When you
do a search it returns the error HTTP:500 - Internal Server Error, however
if you do a search from the actual web server machine, it returns this message
in plain text: "The specified module could not be found."

I searched for the word "module" under Index Server on Microsoft Support
but it didn't return a single result.

Does anyone know what this module is that has gone missing? Is it a library
file or something? Any help would be greatly appreciated.If it matters, we
are running NT Server 4 and IIS4, with Index Server 2.