Ok this is the problem... I was playing my 1/3 way done mod and was enjoying the new features of civilian attack and viking (the flying tank i posted about before)

the civilian has an attack... like i was saying, and the iscript looks like this....

Nukegssault:
playsndbtwn 276 277 # Terran\MARINE\TMaDth00.WAV, Terran\MARINE\TMaDth01.WAV
wait 1
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
attackwith 1
gotorepeatattk
goto CivilianLocal00

its a suicidal (well not acutally, the unit doesn't die upon attacking) attack with EMP effect like 5 times...

now the tank, here is the sieging part:
SiegeTank_Siege_BaseInit:
imgul 255 0 0 # SiegeTankSiegeShad (terran\tstShad.grp)
wait 1
setflspeed 0
playsnd 317 # Terran\TANK\TTaDth00.WAV
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
imgol 555 0 0 # EMP
wait 1
imgol 556 0 0 # EMP
playsnd 319 # Terran\TANK\TTaTra01.WAV
playfram 0
wait 5
playfram 1
wait 5
playfram 2
wait 5
playfram 3
wait 5
playfram 4
wait 5
playfram 5
wait 38
sigorder 1
goto SiegeTank_Siege_BaseLocal00
as u can see, the tank also have a EMP effect....

i am about 60% sure that the problem resides in IceCC...

any ideas?

I'm very sure you should have a "wait" line before "gotorepeatattk"; for first problem.

Second: try a "wait" after "sigorder".

Messing with the siege mode sequences is a good way to make the game crash, as they have a lot of hardcode mingled with them, especially if you mess with the timings.

well, both of these scripts works, i sieged and unsieged multiple times... and i attacked using civilian multiple times....

but just suddenly, out of nowhere, boom...

i tried to play the same map a second time, everything works well, and suddenly... boom...

Isolate the problem by using the Civilian script itself in its own little test mod. Do the same with the Siege Mode script.

Most likely, you'll only have problems when you use the Siege Mode script by itself.