There maybe a problem with what you are inseting.
Firstly are you actually editing the .big file itself or have you seperated out the .ini's? You should be doing the editing to ini files, not the .big files(Unless of courese you've made your own with Finalbig or Tibedit or something)
Second, if that doesnt help run WorldBuilder and look at the crash release data, it will help you debug your problems. It gives the exact line that problems occures.
Hope this helps
