Odd Theme behaviour

[stigzler]

I'm tinkering with custom theme pages. I've come across an odd behaviour. It works for some emulators but not others. Here's a vid:

You'll see it works for Playstation and Atari 5200, but not SNES (theme page not shown - rather a video overlays it?). Very odd, as it won't be the theme Theme.ini file or else the others wouldn't work. I think my theme file structure is correct. Also, background is set in adv emu setup. I've attached the relevant files (log represents nav back to home, select Atari 5200 Emu, back then select SNES). Any ideas, chaps?

UPDATE: Also tried changing the custom background in setup wizard to one of the other system's theme pages (which I know works). Same result. Have scoured the SNES emu settings for defences to the other emus - none that I can see. Curioser and curioser...

PurpleHat.zip GameEx.ini

log.txt background_log.txt