On mine when I run frosty in mode 2+3 it runs fine but when I launch cromwell from mode 2+3 it is green.
INd vga runs fine in mode 1+3 for me and cromwell runs fine in mode 1+3.
It could be your monitor or trace your wiring and use the wiring diagram for the mode switches from herehttp://forums.xbox-scene.com/index.php?showtopic=213487
Did you use the config file for ind?
I have xboxes with sync separators and I have them with internal triggers all perform about the same for me. However I have noticed neither mod has good compatibility. I have like 5 monitors and only 1 monitor works with either mod. On the internal trigger mod I have to use 720p because the monitor hates the 480p signal it produces and flickers in and out. Also on xbmc on the internal trigger mod I have to change the video render method because it does the same thing when watching videos. On the sync seperator mod no adjustments are needed it works as it should with no apparent issues.