Divide by zero error

In a rather small custom map I've been making I've setup a unit selection system (the kind you see on alot of RPG maps) and one of the possible choices is the shaman. Now, I've changed the shaman so now he has brilliance aura, deathcoil, and blizzard. Here's the thing. If I have on shaman, I can cast blizzard once and be fine. But if I cast it twice, or if I have more than 1 shaman and cast it once, I get this error:

FATAL ERROR!

PROGRAM: C:\PROGRAM FILES\WARCRAFT III BETA\WAR3BETACRACK.EXE
EXCEPTION: 0xC000008E (FLT_DIVIDE_BY_ZERO) AT 001B:22701E8E

Now, as you can see, I'm using the single player crack, and as much as I'd like to see if this were just a singleplayer thing, USWest is down right now ;)

I also tried the rain of fire skill instead (Does the same thing but with no graphic), but it still happens, I just have to cast it like 6 or 7 times tho.

So I figure it must be some bug of blizz's, and I change the skill to hurl boulder, and find out it can't attack friendly units. So I put a water elemental nearby so I can target it. I load up the map, only to find that after the water elemental has attack my tower about 3-7 times the game crashes with the same error.

Anyone have any idea what the heck is causing this and how to fix it?

You play on USwest? Why!?
First off everyone there seems to be scared shitless of playing a custom map and the community that will play you will always ask you dumb questions.
If you wanna play custom maps use warforges server.

Also I think its the SP patch my friend. I've given blizzard to grunts with no problem before (its alot of fun too!)

think its just a trigger problem where you use x/0 .. i did the same error for my leaderboard where i set the value for a player to kills/bountys .. i forgot to give bountys var a initvalue so i got kills/0 and the same error ..

Well, I haven't had a problem on USWest. There are alot of custom games on here.

Yeah, it as just the sp crack, since I didn't do any division anywhere in my map.

Welll Last time I was on Uswest was likea month ago when I just released Bunker Command everyone was look ooh whats this wait this isn't a blizzy map Can't play this..
Maybe I'll go on..

When WC3 is avaible to buy, US West will be the place custom maps are made.