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[.net] System.IO.FileNotFoundException: The system cannot find the file specified.

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Hi We have a COM+ component named CreateLetterRequest which is being called from another server. We installed it on two servers as a part of load balancing our application. It was working fine till date. Now one of the servers having some problem in the com+ component. The other one is working perfect. The error I am getting is : I got this error when i use a test application (windows application) . See the end of this message for details on invoking just-in-time (JIT) debugging instead of this dialog box. ************** Exception Text ************** System.IO.FileNotFoundException: The system cannot find the file specified. (Exception from HRESULT: 0x80070002) at System.Runtime.InteropServices.Marshal.ThrowExceptionForHRInternal(Int32 errorCode, IntPtr errorInfo) at System.EnterpriseServices.Thunk.Proxy.CoCreateObject(Type serverType, Boolean bQuerySCInfo, Boolean& bIsAnotherProcess, String& uri) at System.EnterpriseServices.ServicedComponentProxyAttribute.CreateInstance(Type serverType) at System.Runtime.Remoting.Activation.ActivationServices.IsCurrentContextOK(Type serverType, Object[] props, Boolean bNewObj) at TestCrtLtrReq.Form1.Button1_Click(Object sender, EventArgs e) in D:\WellPointSBI\Letter Request and Preview\Wellpoint.Pharmacy.LGM.BG.CreateLetterRequest\TestCrtLtrReq\Form1.vb:line 21 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: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll ---------------------------------------- TestCrtLtrReq Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///D:/WellPointSBI/Debug/TestCrtLtrReq.exe ---------------------------------------- Microsoft.VisualBasic Assembly Version: 8.0.0.0 Win32 Version: 8.0.50727.42 (RTM.050727-4200) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/Microsoft.VisualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.VisualBasic.dll ---------------------------------------- System Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll ---------------------------------------- System.Windows.Forms Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll ---------------------------------------- System.Drawing Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll ---------------------------------------- System.Runtime.Remoting Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Runtime.Remoting/2.0.0.0__b77a5c561934e089/System.Runtime.Remoting.dll ---------------------------------------- CreateLetterRequestSBI Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/CreateLetterRequestSBI/1.0.0.0__5a3ce91ee544586c/CreateLetterRequestSBI.dll ---------------------------------------- System.Xml Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll ---------------------------------------- LGMSbiUtility Assembly Version: 1.0.0.0 Win32 Version: 1.0.0.0 CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/LGMSbiUtility/1.0.0.0__5a3ce91ee544586c/LGMSbiUtility.dll ---------------------------------------- System.EnterpriseServices Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.EnterpriseServices/2.0.0.0__b03f5f7f11d50a3a/System.EnterpriseServices.dll ---------------------------------------- System.Data Assembly Version: 2.0.0.0 Win32 Version: 2.0.50727.832 (QFE.050727-8300) CodeBase: file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.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: <configuration> <system.windows.forms jitDebugging="true" /> </configuration> 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. I think the error is nothing to do with code as it in one server it is running. Can anybody help me to resolve this issue...? Thanks in advance.

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I'm not really experienced in COM+ interop, but two things I can think of:
- try to re-register the COM components
- Ensure that the generated COM interop assemblies (RCW, runtime callable wrappers) can be found by the app

Another thing: is there any information on which file the app cannot find?
If its an assembly loading problem, try using Fusion to find out more about the error (see e.g.: here)

Regards,
Andre

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Hi,

Thanks for ur valuable information. Actually when I check the log of loaded assemblies , i found out that the COM + dll is loaded from GAC. I think that COM+ dll should not be installed in GAC. When i uninstalled it from GAC , it works fine.

Thanks a lot

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