Problem with PAC file

[Erez]

Hello,
I have a proxy with PAC file via DHCP WPAD. Fiddler (v4.4.9.9 running on Windows 8.1) works well, except for a specific URL, "http://my.company.com/Tests/123456789ABCDEF.txt".
This URL is specified in the PAC file, which is 

function FindProxyForURL(url, host)
{
    if (url=="http://my.company.com/Tests/123456789ABCDEF.txt" ||
        shExpMatch(url, "*://my.company.com/Support/*") ||
        shExpMatch(url, "*://my.company.com/MF/*")
    )
        return "DIRECT";
    else
    if (host=="www.company1.com" || host=="my.company.com" || host=="www.company3.com" || host=="www.company4.com" || host=="s3.amazonaws.com")
        return "PROXY 192.168.0.2:8888";
    else

        return "DIRECT";
}

Any idea what could cause it?

Thanks!

PS: original URLs modified but maintained characteristics.

[Erez]

UPDATE:

I think I solved the problem by re-saving the file with ANSI encoding instead of UTF-8. I can provide the files in private channel if it helps.

[Eric Lawrence]

Hi, Erez--

Fiddler relies upon WinHTTP to parse and run the proxy script. It's entirely possible that WinHTTP doesn't like a UTF-8 BOM (three bytes at the top of the file) and that would cause it not to work. But that's unfortunately a question for Microsoft, as I no longer have access to their source code...

Regards,
Eric Lawrence
Telerik