Hi, I am using VS 2012 and crystal report support pack 9. I am creating WPF application and in that I am creating 2 user controls. In these user control I am using CrystalReportsViewer only. I didn't bind any report so far. When I try to open crystal first user control then it perfectly open. if I open second then also it perfectly open but when I try to open again first then application gets crash and getting below error. Same was working in VS 2010 and .net 3.5 framework but when I tried same with .net framework 4.5 it starts crash. An unhandled exception of type 'System.ArgumentNullException' occurred in SAPBusinessObjects.WPF.ViewerShared.dll Additional information: Value cannot be null. Please help Thanks in advance.
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