[Dock-fans] About the tutorials of dock6.2

[Aurum Bai]

Dear all,

When compile the dock6.2.There is a "bks_fxn_demo"folder in the dock6/tutorials.This is an example.

I input command "csh script_demo"at this dir, but some err come up:
"
Initializing Library File Routines...
Initializing Orienting Routines...
Initializing Conformer Generator Routines...
Initializing Dock3.5 Score Routines...

Could not open ../3_grid/chem52.cmg for reading chemgrids.  Program will terminate."

What's wrong with it? How do I solve it?

Thanks 

Aurum