Cintro and Cxmb

I have 3.40-OEA, and have been trying to run my custom video coldboots with the flash-less cintro.
I also have cxmb installed and I would prefer to keep it that way. However there is a conflict between the two.
I have autoboot eboot.pbp enabled as well as skip sce logo. My gameboot has been renamed to intro.pmf, and everything has been put in the correct places. Yet when I boot my psp it still runs opening_plugin.rco. If I delete opening_plugin.rco in the tm folder then I just get a black screen when i boot my psp.
I really would like a custom video coldboot to match rest of my psp so any help would be much appreciated.