Mame2010 appears to have savestate = false in their config, so maybe the 'cannot save' message is normal. Other MAME cores do have 'savestate = true' though (MAME2003, MAME2003+, MAME).

@alexp just to clarify, LEDSpicer supports both Single color and RGB
if you need minimal functionality then you are set.

@mitu Ah dang, that's too bad. Thanks for the response.

I also use the PowerBlock and it is well supported here. The guy who runs the place is a Global Moderator in this forum. Check the unit here:
https://blog.petrockblock.com/powerblock/

@Panglin Please reply to my questions if you want help to fix this. Thanks.

@backstander Worked like a charm, thank you so much, if I ever need help, ill be sure to ask you since you seem to know what your doing.