Crystal Report Windows Forms Wiewer Error: "Object reference not set to an instance of an object"

Hello:
I installed first Microsoft Framework 1.1 and a software that uses Crystal Report Windows Forms Viewer. It seems was made with Microsoft Visual Studio NET .2003.
My problem is that this software doesn’t print the reports, in the preview I only get this message: TITTLE: "Crystal Report Windows Forms Viewer"
                    Message: "Object Reference not set to an instance of an object"
 It happens in 2 pc’s with Windows 98 and 2pc’s with windows XP in others with W98 or Wxp The reports show correctly.
Please Help me to find the solution.
Thank You !!!!


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Crystal Report Windows Forms Wiewer Error: "Object reference not set to an instance of an object"