not able to run crystal reports in live system

Hi Friends,

I am developing an web application where i need to generate crystal reports. Reports are generated fine in local machine.

when i make the system live it will not work and it will give error as "Could not load file or assembly 'CrystalDecisions.Web, Version=10.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified."

I need to generatr this report since it is urgent. can any body help me.

Thanks in advance.