Messiah2 PS1 diagnal lines on screen

[GeFunk]

I just install the Messiah2Pro into my US V5/V6 PS2, everything boots and plays fine. There is only one problem. Every time I play the PSone game, I will see diagnal lines on the screen. If I disable Messiah2, everything will look fine. Diagnal line only occures when I try to play psone game with Messiah2 enabled. Did I do anything wrong with my modchip??

Thanks for helping

GeFunk