OK then you setup Crystal Report for visual studio 10 <a href="http://downloads.businessobjects.com/akdlm/cr4vs2010/CRforVS_13_0.exe">http://downloads.businessobjects.com/akdlm/cr4vs2010/CRforVS_13_0.exe</a>[<a href="http://downloads.businessobjects.com/akdlm/cr4vs2010/CRforVS_13_0.exe" target="_blank" title="New Window">^</a>]
Then open your existing report and save it with new version. Hope it will be work for your project.