Hi Galen,
Error 1513 means some problem occurred in your script.
quoted from the manual :
Quote:
A crash happened due to bad script code in a certain function, like a division by 0 or a square root of a negative number. Note that such Errors are only caught and indicated in the development engine. In the distributable version they will just crash the program.
Try delete the wdl from WED->Map Properties then run preview again to
isolate the problem.