Thanks for the response c-beats.
I tried a fresh install of the Rom set calling the platform “Atari 8-bit” but there was still no way to change the scraper name outside of the prescribed (“Atari 800”) list. I went ahead with the install of the new “Atari 8-bit” platform anyway but it still did not access EmuMovies.
I have had the same trouble with the “Phillips CD-I” platform. All other platforms I have tried (approx 24) access EmuMovies without any issues.