Application built on Windows 7 in not running on XP

Question

This application built on Windows 7 in not running on XP. I’m getting the following exception. 

Message: Cannot create instance of 'MainWindow' defined in assembly 'Visualizer, Version=1.0.0.6294, Culture=neutral, PublicKeyToken=null'. Exception has been thrown by the target of an invocation.  Error in markup file 'Visualizer;component/MainWindow.xaml' Line 2 Position 2.

I am not sure what is causing this problem. But when I checked the .net framework 3.4 SP1 versions, I’m seeing different builds. 

Windows XP:  3.5.30729.1

Windows 7:    3.5.30729.4962

Wondering if this different versions causing this problem or something else.

Thank you

Answer 1

I build apps on Windows 7 and deliver them to clients with Windows XP without problem.

I just checked. My Windows 7 box has the .NET version you mention. My Windows XP virtual machine has the .NET version you mention. I built an app in Expression Blend on Windows 7. Copied the EXE to my XP virtual machine. It runs without error on both machines.

> Wondering if this different versions causing this problem or something else

I would suspect "something else."

Wally

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Software development, consulting, and training

Answer 2

Thanks Wally. It was something else.

I am using Infragistic controls and somehow I got the different builds of same version. It worked when I copied the infragistics dlls from my Windows 7 computer.