Classic Shell/Explorer Custom Command

I finally had some time to investigate, and I found the problem. The thing is VBS files are not executables but documents.
You need to use the command "WScript.exe E:\MKLink.vbs"

If the command is just "MKLink.vbs", then I execute it using the ShellExecute API, which understands how to launch documents like VBS files, or TXT files, etc. However it is a fire and forget type API.

For more complex commands that use %3, %4 or %5, I need to have a direct access to the process that runs, so I can wait for it to finish. For that I need to use the API CreateProcess, which is not smart enough to know that for VBS files it needs to run WScript.exe.

WScript.exe "E:\zzz.vbs" "%3" "E:\FPVTemp" works!

Thanks for the effort, and the for program, of course.

By the way, just FYI, your HELP says "Keep in mind that if the current folder is a root of a drive it will end with a backslash (like C:\)". I get a double-quote rather than a backslash: i.e. C:"

All the best.

Most likely "%1" turns into "C:\", and \" is considered an escaped double quote by the command line parser. I don't think there's much I can do about it, as I have no control over the parser of WScript or whatever tool you are using.

It's not a problem. If I get a 3-character "path to current folder" in the form of X:?, I just drop the third character.

Thanks again.