I suffered from this problem for the last 2 days. I think this problem occurred before installing Visual studio 2008. I initially installed Visual Studio 2010 and Crystal report V13. Back up the business object registry files by right-clicking on the business object, then select export, and then execute the registry file on the target machine. If your OS is installed in a different directory, you need to change the path and the shared directory.
See screenshot for more help: 
Subhas malik
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