Well, the script is in Foobar's folder. That path is "C:\Program Files (x86)\foobar2000\foo_allmusic.vbs". I also have a copy of the script file in "D:\scripts\foo_allmusic.vbs". And the panel does show the input error "Can not find script ...", if I move the script, where it can't be found by default without a whole path (at least with ANSI and UTF8, UTF16 shows me a line of Asian symbols).
If I want to use a whole path to the Foobar's folder, the path is somehow cut off and there is another input error: There is no file extension in "C:\Program Files".
But that doesn't matter, because if I use the script file in D:\scripts\foo_allmusic.vbs and the command line
cscript //nologo "D:\scripts\foo_allmusic.vbs" "%album artist%" "%album%" review
instead the panel is blank again. So I guess it can be found just like in Foobar's folder without a path specification.
Your command line executes the script, if I use double quotes for the path. Then it will prompt and shows:
Usage: cscript //nologo foo_allmusic.vbs ""%album artist%"" ""%album%"" review|bio|skip
Same if I double click on the script file.
Edit: Oh, if you meant to use your command line in Foobar instead of the cmd, it cuts off the same:
C:\Program Files (x86)\foobar2000\foo_allmusic.vbs cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
Biography : execute command -> C:\Program Files
fail: C:\Program Files
"C:\Program Files (x86)\foobar2000\foo_allmusic.vbs" cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
Biography : execute command -> "C:\Program Files
fail: "C:\Program Files
D:\scripts\foo_allmusic.vbs cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
Biography : execute command -> D:\scripts\foo_allmusic.vbs cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
fail: D:\scripts\foo_allmusic.vbs cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
"D:\scripts\foo_allmusic.vbs" cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
Biography : execute command -> "D:\scripts\foo_allmusic.vbs" cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
fail: "D:\scripts\foo_allmusic.vbs" cscript //nologo foo_allmusic.vbs "Electric Wizard" "Black Masses" review
cscript //nologo "D:\scripts\foo_allmusic.vbs" "Electric Wizard" "Black Masses" review (same as no path)
Biography : execute command -> cscript //nologo "D:\scripts\foo_allmusic.vbs" "Electric Wizard" "Black Masses" review