VS2010 Cannot Display Rreport/Viewer

Environment is Win7 Pro 64bit.  Visual Studio 2010 used to develop a Windows application.  During initital stages of development I downloaded Beta 2 version of CR13 for VS2010.  Was able to display viewer with data, print reports, create PDF's, etc.  Additional data, reports previously created in CR 8.5 using an earlier version of an Access Database.  Database has been upgraded to Access 2007 and by creating new connection the older report formats worked just fine under the beta version.
Recently downloaded CR13 and cannot display any reports I was previously able to produce.  Cannot create new reports.  In fact, cannot display any WinForm that references a crystal report viewer.  On the Microsoft forums several other folks seem to be having the same or similar problem.
Was there a change to the CR viewer control between Beta 2 and CR13?  If not changed, does anyone have any suggestions why results are so radically different?  I've checked documentation referenced in an earlier response but possible resolutions going back to how things were done in VS 2003 don't seem to provide a solution, at least for me.
Suggestions anyone?

Don,
Actually, my system has always been set to framework 4.0.  How I got around this problem was uninstalling CR13 (again) and re-installing.  After doing this I was able to see the CR Viewer.
In another post you suggested that in addition to setting to framework 4.0 that the computer had to be set to either x86 or x64; that 'any computer' setting would not work.  Actually this suggestion resolved my problem.  X64 does not work but setting computer to x86 resolved the problem.
Edited by: kdw_123 on Feb 17, 2011 8:57 PM
Please let me know how to award you points for your answer.  Thanks.
Edited by: kdw_123 on Feb 17, 2011 8:58 PM

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