I have been working to modify the DeGray example to match my system.  I went through and made a few changes to have  a pump instead of a structure and to have 10 vertical layers instead of 36.  
I am getting the following error when I run the preprocessor:
Either illegal value or incorrect card somewhere in the following card
RPOM_N       OFF                                                      
CST DERI   CDWBC   CDWBC   CDWBC   CDWBC   CDWBC   CDWBC   CDWBC   CDW
DOC          OFF
POC          OFF       
I have checked my field widths many times and that does not appear to be the problem.  Also I have recreated my edits after starting over from the DeGray example and on the second time I still get the same error in the preprocessor.  I have all derived constituents turned off in the CST Derived card.  Also, when I run the preprocessor, it freezes up at this CST Derived card and I have to use task manager to kill it.
Any ideas?
Thanks for your help.
error in control file
Excuse me, I am having the