Really annoying release

My server randomly stopped with this:
___________________________________________
ERROR in
action number 1
of Other Event: User Defined 2
for object Flamethrower:
Error in code at line 149:
for(i = 0; i < realnumflames; i += 1)
^
at position 37: Unknown variable realnumflames
60 FPS feels weird and glitchy.
Rocketmen can sometimes shoot through platforms they stand on.
30 FPS is a NOT the original framerate - I never had any "shocky" stuff going on, 30 FPS is unbearable.
Animations are too fast with 60fps.
Joining a server shows a command prompt.