First time running into this issue.. and sure enough it's for a new years gig.
Recorded a clip via Syphon recorder, and try to export it to miniMAD. export goes fine - but upon loading the splash screen shows, and then the projector just flashes white on & off, never playing the video.
Tried exporting 3 times now and same thing happens. Trying a format/restore .IMG from ApplePiBaker but not too hopeful.
Any ideas? I've used the default settings as well as unchecking "adapt resolution" option. no luck.
This may be the first time I've exported with Madmapper 2.5 release - which asked to update my miniMAD, not sure if it's related - my other sd card from previous versions plays fine.