Crystal reports Chart drill down problem

I am Newbie in Crystal reports. I have made a four level drill down chart report. It works fine in my machine. but as try to debug or run it in some other machine the drill down of reports don't work after the first level.i am using Visual studio 2008 .Net platform 3.5, and crystal reports 10.5 which comes along with VS2008. any help or suggestion would be useful. 
thank you 
sabyasachi