Encountered this error message when running a C# application accessing the webcam

Question

I have an application that's running fine on a few machines but not on one critical demo unit. It's simple winform application that accesses webcam and attempts to record a video. This application immediately crashes when started. Here's the Exception message:

*** Exception Text ******* System.Runtime.InteropServices.COMException (0x80040154): Class not registered (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)) at System.Runtime.InteropServices.Marshal.BindMoniker(IMoniker pmk, UInt32 grfOpt, Guid& iidResult, Object& ppvResult) at System.Runtime.InteropServices.Marshal.BindToMoniker(String monikerName) at DirectX.Capture.Capture.createGraph() in C:\Users\SONY\Downloads\Compressed\DirectXCapture_demo_Enhanced\DirectXCapture_demo\DirectX.Capture\Capture.cs:line 1107 at DirectX.Capture.Capture..ctor(Filter videoDevice, Filter audioDevice) in C:\Users\SONY\Downloads\Compressed\DirectXCapture_demo_Enhanced\DirectXCapture_demo\DirectX.Capture\Capture.cs:line 928 at Ivypromise.webcame.WebCame.buttonRecord_Click(Object sender, EventArgs e) in E:\Project_extra\LiLi_project\Ivypromise_desktopApp\Ivypromise\Ivypromise\webcame\WebCame.cs:line 209 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

***** Loaded Assemblies ******* mscorlib Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.4963 (win7RTMGDR.050727-4900) CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll ---------------------------------------- Ivypromise Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/Users/Jenny/Dropbox/To%20share/li/Release/Ivypromise.exe ---------------------------------------- System.Windows.Forms Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.4961 (win7RTMGDR.050727-4900) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.4962 (win7RTMGDR.050727-4900) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- System.Drawing Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- DirectX.Capture Assembly Version: 1.0.4380.42651 Win32 Version: 1.0.4380.42651 CodeBase: file:///C:/Users/Jenny/Dropbox/To%20share/li/Release/DirectX.Capture.DLL ---------------------------------------- DShowNET Assembly Version: 1.0.0.1 Win32 Version: 1.0.0.1 CodeBase: file:///C:/Users/Jenny/Dropbox/To%20share/li/Release/DShowNET.DLL ---------------------------------------- System.Xml Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900) CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll ---------------------------------------- Microsoft.DirectX.AudioVideoPlayback Assembly Version: 1.0.2902.0 Win32 Version: 5.04.00.2904

CodeBase: file:///C:/Users/Jenny/Dropbox/To%20share/li/Release/Microsoft.DirectX.AudioVideoPlayback.DLL

***** JIT Debugging ******* To enable just-in-time (JIT) debugging, the .config file for this application or computer (machine.config) must have the jitDebugging value set in the system.windows.forms section. The application must also be compiled with debugging enabled.

For example:

When JIT debugging is enabled, any unhandled exception will be sent to the JIT debugger registered on the computer rather than be handled by this dialog box.

So have you asked yourself "what is different about this machine"? — Igby Largeman
Class not registered your machine is missing a COM component. Just install it — L.B
Specifically, what is different about directX and the drivers for the webcam? — Tetsujin no Oni
The machine is owned by a senior exec at a remote location so we don't have access to it all the time. What should I look if I remote in next time? — user1030532
L.B, can you please give a pointer where and what COM component should we install on that machine? — user1030532

user1030532 user1030532 · Accepted Answer · 2012-01-25T06:19:55

We switched to directShow.net dll and it worked on all our machines. We think we were missing some webcam driver interface in our original solution.

Encountered this error message when running a C# application accessing the webcam

CodeBase: file:///C:/Users/Jenny/Dropbox/To%20share/li/Release/Microsoft.DirectX.AudioVideoPlayback.DLL

1 Answers