seems the MMM causes a major crash at the sacred bog in point lookout. I confirmed this by
unchecking the MMM esm & esp files, worked good after. so I was wondering is there a fix for
this? or just continue on with point lookout then when I get back to the Capitol Wasteland re-check
the MMM esm & esp files?
thanks.

Not sure maybe you can try and PM Martigen and tell him your problem.

Please PM with more details and especially a savegame, keen to find and squash as crash bugs -- try to remove all other mods but MMM and re-save before you send it to me, as chances are I don't have the same load order as you.