shutdown

Hello everybody,

I am searching precision of crack propogation in a bonded wafer double.I wrote a code but the problem is that when I want to solve it in ANSYS, the program is shutdown. I need help about it. Thanks for your helps...

 Greetings

 Volkan DALMISLI

P.S:The code is given below. 

finish
/title,sphere wafer
/filname,sphere wafer
/clear,start

*CFOPEN,volkan,dat           ! deletes the data file
*CFWRITE,releaserate     ! table heading of the data file
*CFCLOS
/PNUM, volu, 1 
/prep7