Crystal Report Error (Reports asking for parameters)

Dear Experts,

I am getting the following error after complete Crystal Viewer Installation on some PC's. I have attach the file for your review.

And the error come if a report asks for a parameter. The one's(Reports) without the parameter are running fine.

Please advice

http://uploading.com/files/6e1273bb/CR_Error.JPG/

Faisal Baloch