Hi
I think you might have to delete all the NCH files from your programs folder and then try the download again. You want to download (presumably) the file called vpsetup_v2.36. Save this in a new NCH folder (which you create first) and then run it, placing the output into the same folder. You can then create a shortcut to the new VP exe file.
I think that the version you are trying to run simply reads in the options from the later version which you may still have on your PC. (Don't really know though).
Why do you prefer V2.36 over v2.41 BTW? I tried the earlier versions (though not 2,36 I have to say,) and find 2.41 much better.
Nat