from VS2010 to VS2012 crystal report problem

Hi guys,

I have a problem in my working system now, first i created this system into VS2010 and all works fine and after a year i decided to use the VS 2012 to enhance the system itself. The system works fine when i incorporate it in VS2012 and everything goes well until i need to add a new report to my system. Now the problem is when i run the enhance system and i generate the report, it says "Load Report Failed". I research all things that i needed to fix it up but their resolution does not suit to my problem. can anyone help me about this?

Here are error says:

CrystalDecisions.Shared.CrystalReportsExeption: Load report failed. --->

System.Runtime.InteropServices.COMExeption: Unsupported Operation. A

document processed by the JRC engine cannot be opened in the C++ stack.

  at

CrystalDecisions.ReportAppServer.ClientDoc.ReportClientDocumentClass.Open

(Object&DocumentPath, Int32 Options)

  at

CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.Open(Object

&DocumentPath, Int32 Options)

  at

CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDo

cumentisOpened()

  ---End of inner exception stack trace---

  at

CrystalDecisions.ReportAppServer.ReportClientDocumentWrapper.EnsureDo

cumentisOpened()

  at CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String

filename, OpenReportMethod openMethod, Int16 parentJob)

  at CrystalDecisions.CrystalReports.Engine.ReportDocument.Load(String

filename)

Please help me about my problem.