Flashback problem

Hi, I have problem with flashback game. After create CD and playing it in a Sega CD i see only text that game is loading... After it only black screen and light of access everytime on. It's 3th CD i made and have same problem. I use CDRWIN (4x) with mode 2048 (with POSTGAP and PREGAP included.). I must use different mode to create CD. Thanks in advance...