Screen saver overlay/wheel artwork problem

[starpilot]

Hi,
I am using a Pi2 running attract mode.
I have got it all set up how i want it with several emulators.
The problem i have is when the screen saver kicks in, it shows the video snaps like how i want it.
BUT only displays some of the overlays/wheel artwork.
Mame4all & Atari 2600 work great.
All the others nes. snes. mastersystem ect ect. do not show overlay/wheel artwork on the screen saver
what am i doing wrong ?

many thanks for helping in advance

[hermine.potter]

@starpilot
look at your atari 2600 artwork.
compare it with one of your other (not working) systems.
check path, resolution, file format and so on.
maybe there's a difference.