Misbehaving CGI

HELP!!!

I'm running an NT 4.0 os, IIS 4.0 SP4 webserver (hosting my own site(s)), ActivePerl 522, with a Pentium III 450 chip.

The problem is as follows....when I run script "test_nt.pl" from website A it executes flawlessley...when I run the same script from website B I get the following error message:

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"CGI Error
The specified CGI application misbehaved by not returning a complete set of HTTP headers. The headers it did return are:

Can't open perl script "????????????????????????????????????l???????": Invalid argument"
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Both sites have the same identical properties (as far as I can tell)...the only differences are:

Site A has "www.alldatacomplaints.com" in the Website-Website Identification-Description field (in IIS) and had a Host Header Name of "www.alldatacomplaints.com".

Site A - http://www.fordcomplaints.net/cgi-bin/test_nt.pl

Site B has "www.fordcomplaints.net" in the Website-Website Identification-Description field (in IIS) and had a Host Header Name of "www.fordcomplaints.net"

Site B - http://www.alldatacomplaints.com/cgi-bin/test_nt.pl

Is there something I'm missing? The script is simple and logically if it works for one site it should work on the other.

HELP!!!