Neo Geo Cd Emu

I must be doing something wrong, I created an emu cd and it loads fine but when I do the swap with my Games, none of them load..except Metal Slug 2 but it gets to the load screen and just stays there..any idea's what I could be doing wrong?

PS2:
3001-R
NeoKey
Swap with GS2

Apparently theres a new version coming out soon, might pay to wait until then.

its supposed to be the defining release