Congratulations for the mod, but I got a problem:
In the KOTRfixREADME.txt , is writen this:

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Now to apply those fixes, you will need to run your medieval game exe sing a shortcut or a bat file.
The target of said file should read similar to this:

C:\Medieval\medieval2.exe --io.file_first

Where "C:\Medieval\" varies depending on your installation but medieval2.exe --io.file_first should be constant.

As above does not always work for some systems, the path may alternatively have to be similar to this:
"C:\Medieval\medieval2.exe" --io.file_first
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But I can't understand how to change the target of the file. I can't create any merchant or spy in my campaing. How can I aply your fixes? I ran the bat file but nothing changes.