You need to make sure that Fcdf() is the first line, (or close) of your program. If this is true, you shouldn't have any problems. If you do, then I would assume something else is broken.
Well I just changed the cragcake stuff to the fullrene stuff so it's like
.name
#Axiom(FULLRENE)
Fcdf(1)and the last line's Fcdf(0) so yeah.
What's odd is that it was epic-crashing last night, but now it's working properly..I'm not sure if it's going over the limit now tho b/c it was earlier.