I am having trouble burning Guilty Gear X (J), Ikaruga (J), and Plasma Sword. I got them from here.
I have no idea where else I could get alternate files to try to make them burn, and these work, but for some reason not for me, if you think you know the problem or need to ask me a question to try to figure it out, please tell me, if this helps, I have 960 MB of RAM and all of my other burns work fine, except for these 3, and I have burnt at least 20 w/o trouble, just these. The reason I know they work is because they are from Sprung and at least 1 person I know has confirmed these working and burnt. (except for Plasma Sword, but I have not seen anyone talk about it).
I have tried Bootdreams, alcohol 120 percent, and discjuggler (only for GGX for this program).
EDIT: Guess I was oblivious to Sega Systems, sorry.