I sugest that u try step by step, first fs2004 to fs2002 then so to cfs2, after that the more complex the animations, then so shine and specular. always in each step saving and next step working on saved .
The best version (i think so) is the beta 117
Never run other program under screen.
When the case is very hard , try to use the Morton program , fs9 to cfs2 it needs more time and not allways u get succes.
I have doxbox 32bit installed, no more tricks my friend.