did you try making a whole new copy of your mt4 folder and copying the indicator there? it's weird that it didn't appear, since even if the Indi didn't work (and it doesn't seem to be the case), as long as it's in the mql4 folder it should appear in the terminal.
EDIT: just tested it in my terminal and it worked perfectly, so if it still don't work for you could try reinstalling the mt4.