Problem with crystal report using C#

Question

hello friends,
i have very big problem . i have deployed my software on client machine .. every thing is going perfect but when i m taking Reporting its give me Error ... even i m not the able to see report on Client machine so please tell me how can i solve my problem .. its too urgent friends....

Error is Cannot load File and Assembly "CrystalDescistion.windows.form........
system can not find the file location...
i don't know how can i solve this problem...

Reply me ASAP...

thanks in Advance
Naeem Khan