[xp]Creation System - Needs Fixing

[Xero Shifter]

Basically the creation systems (item/weapons) offered at this site where not exactly what I was looking for, but I did find one (after about 30 seconds of googling) The unfortunate part is that something is happening when i try to create the weapons in the demo. The game crashes. I have tried several times over and over again with different combos of items, it still crashes every time.
I was wondering if someone here could take a look at the script or something to figure out what is going on, and hopefully fix the problem. If you would rather just make the system over again (doubtfull) thats fine too, w/e I just need the features/fuctions that this one has.

Link to Original Site
Download Demo

The creator of the script seems to have put this up for free distribution, no conditions, which im assuming he just wants credit.
There are a few other things about the script that seem to be annoying as well (cant handle more than one weapon with the same ID, meaning putting weapons in shops is impossible) it would be nice to find a fix for these, but not entirely necissary. I can always try to work around them.

[Blizzard]

I haven't seen Leon being active here in months, but maybe you should post at CA as well if he's still active there. He knows his script best and it suited best to fix it. :/