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I've built a .NET Windows Forms application in Visual Studio 2010. I also built a corresponding setup/install package via Visual Studio 2010. This is built as a 32-bit (x86) application. (We make use of third-party Windows Forms controls that are 32-bit only). I am able to run the setup package and deploy successfully to other Windows 7 64-bit environments and 32 bit Windows XP boxes. The installed application runs fine on these. However, when I attempt to run Windows Server 2008 R2 - 64 bit, the application crashes at startup. It installed successfully via the installer without any errors. It appears to crash when loading the application. I put a message box as the first line in the application to see if it got past loading. The message box doesn't show up, so I assume that it occurs during loading/init of the application. So far I haven't found much to go on. From the Details I see the following: Exception Code: E0434352 I've fished around/googled to see if there was anything obvious, but I saw nothing. I saw some references to a possible stack overflow in the CLR . The Windows Forms application is built with the following references: DevExpress Infragistics Winforms controls ORACLE DataAccess DLL RabbitMQ What is the issue? How do I approach figuring this out? How do I debug to get more useful information?

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