Hi all! I'm getting this message again. I have the <system.windows.forms
jitDebugging="true" /> in my config file and it seems like this is not
happening while attached to the VB6 client application and debugging.
However, while not attached to the VB6 client I am getting this message when
raising an exception to the com wrapper. I need to know what causes this
message. And why can you turn it off while debugging. I seems like the
underlying Communication object is raising this error from a Background
Worker object. It apprears to be an unhandled exception when it gets to my
WMWrapper class. Is there a way to igorne this unhandled exception?

Information is greatly appreciated!

whole message...

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialog box.

************** Exception Text **************
System.Runtime.InteropServices.COMException (0x80010007): The callee (server
[not server application]) is not available and disappeared; all connections
are invalid. The call may have executed. (Exception from HRESULT: 0x80010007
(RPC_E_SERVER_DIED))
at System.RuntimeType.ForwardCallToInvokeMember(String memberName,
BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData&
msgData)
at CLA_WMWrapper.IWMWrapperEvents.ErrorOccurred(String raisedEX)
at CLA_WMWrapper.WMWrapper.m_WMInstance_ErrorOccurred(Exception raisedEX)
in I:\DEV\CLA_WeldMonitor\CLA_WMWrapper\WMWrapper.vb:line 216
at CLA_WeldMonitor.WeldMonitor.ProcessException(Exception inException) in
I:\DEV\CLA_WeldMonitor\CLA_WeldMonitor\WeldMonitor.vb:line 1298
at
CLA_WeldMonitor.WeldMonitor.m_Communications_DeviceErrorOccurred(String
deviceName, Exception deviceEx) in
I:\DEV\CLA_WeldMonitor\CLA_WeldMonitor\WeldMonitor.vb:line 2031
at
CLA_Communications.Communications.m_DeviceInfoHandler_ErrorOccurred(String
deviceName, Exception ex) in
I:\DEV\CLA_Communications\Communications.vb:line 877
at CLA_Communications.DeviceInfo.ProcessError(Exception& ex) in
I:\DEV\CLA_Communications\DeviceInfo.vb:line 458
at
CLA_Communications.DeviceInfo.m_TCPClientDeviceHandler_ErrorOccurred(EndPoint
listenerEndPoint, Exception exception) in
I:\DEV\CLA_Communications\DeviceInfo.vb:line 1764
at cla_TCPClient.ClientClass.ProcessError(Exception ex) in
I:\DEV\cla_TCPClient\ClientClass.vb:line 422
at
cla_TCPClient.ClientClass.m_ClientCommunicationsProcessingWorker_ProgressChanged(Object
sender, ProgressChangedEventArgs e) in
I:\DEV\cla_TCPClient\ClientClass.vb:line 609
at
System.ComponentModel.BackgroundWorker.OnProgressChanged(ProgressChangedEventArgs
e)
at System.ComponentModel.BackgroundWorker.ProgressReporter(Object arg)


************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
CLA_WMWrapper
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/CLA_WMWrapper.dll
----------------------------------------
CLA_WeldMonitor
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/CLA_WeldMonitor.DLL
----------------------------------------
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.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
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: 2.0.50727.42 (RTM.050727-4200)
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: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
LoginWin
Assembly Version: 2.0.1.0
Win32 Version: 2.0.1.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/LoginWin.DLL
----------------------------------------
CLA_Communications
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/CLA_Communications.DLL
----------------------------------------
Accessibility
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/Accessibility/2.0.0.0__b03f5f7f11d50a3a/Accessibility.dll
----------------------------------------
cla_TCPClient
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/cla_TCPClient.DLL
----------------------------------------
CLA_Logging
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/CLA_Logging.DLL
----------------------------------------
System.Configuration
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System.Configuration/2.0.0.0__b03f5f7f11d50a3a/System.Configuration.dll
----------------------------------------
System.Xml
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_MSIL/System.Xml/2.0.0.0__b77a5c561934e089/System.Xml.dll
----------------------------------------
CLA_SerialPort
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/CLA_SerialPort.DLL
----------------------------------------
cla_TCPListener
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase:
file:///I:/DEV/CLA_WeldMonitor/CLA_WMWrapper/bin/Debug/cla_TCPListener.DLL
----------------------------------------
System.Web
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.210 (QFE.050727-2100)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_32/System.Web/2.0.0.0__b03f5f7f11d50a3a/System.Web.dll
----------------------------------------
System.Data
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.42 (RTM.050727-4200)
CodeBase:
file:///C:/WINDOWS/assembly/GAC_32/System.Data/2.0.0.0__b77a5c561934e089/System.Data.dll
----------------------------------------

I'm still getting the same basic message...

System.Runtime.InteropServices.COMException was unhandled by user code

ErrorCode=-2147418105

Message="The callee (server [not server application]) is not available and
disappeared; all connections are invalid. The call may have executed.
(Exception from HRESULT: 0x80010007 (RPC_E_SERVER_DIED))"

Source="mscorlib"

StackTrace:

at System.RuntimeType.ForwardCallToInvokeMember(String memberName,
BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData&
msgData)

at CLA_WMWrapper.IWMWrapperEvents.WrapperErrorOccurred(String msg)

at CLA_WMWrapper.WMWrapper.m_WMInstance_ErrorOccurred(String msg) in
I:\DEV\CLA_WeldMonitor\CLA_WMWrapper\WMWrapper.vb:line 212

at CLA_WeldMonitor.WeldMonitor.ProcessException(Exception
inException) in I:\DEV\CLA_WeldMonitor\CLA_WeldMonitor\WeldMonitor.vb:line
1301

at
CLA_WeldMonitor.WeldMonitor.m_Communications_DeviceDataReceived(String
deviceName, String data) in
I:\DEV\CLA_WeldMonitor\CLA_WeldMonitor\WeldMonitor.vb:line 2067

at
CLA_Communications.Communications.m_DeviceInfoHandler_DataReceived(String
deviceName, String data) in I:\DEV\CLA_Communications\Communications.vb:line
848


Here is what I know... I have a class called WeldMonitor (.net2005) and a
class called WMWrapper (.net2005). The WMWrapper exposes my events and
methods to COM (VB6) client application. In the DeviceDataReceived event
handler I am raising an error from WeldMonitor to the WMWrapper. When the
exception event is re-raised in the WeldMonitor class to the event in the
WMWrapper class the RPC_E_Server_Died error occurs and is not handled do to
the fact that I'm trying to raise this new error to the wMWrapper as well.

I can just igonre all errors in this catch block but I'd really like to
understand what is going on here. It looks like when the event I'm trying
to raise to the VB6 client (WMWrapper event called WrapperErrorOccurred) I
am getting this message. Which is really werd because I thought this
exception was from my lower level Communications object
(CLA_Communications\Communications.vb:line 848).

However, the message box that VS2005 is displaying says to check the
ErrorCode property of the exception to determine the HResult returned by the
COM object. It's like the re-raising of this event (which is an error
message) is causing the issue and not the Communications object.

Any help is greatly appreciated!!!!

I was converting from a .net2005 exception to a string in the original
WMWrapper.m_WMInstance_ErrorOccurred event handler in order to push back a
string to my COM / VB6 client. Now I'm doing this in my WeldMonitor class
and only using strings in my events both on the WM and WMWrapper side. I'm
still getting the same basic problem!!

JerryM

Hi Jerry,

I've carefully reviewed your post. Based on my understanding, the exception
you're seeing:

1) only occurs when there's no debugger attached
2) related to jitDebugging setting, but I'm not very clear about it: does
it occur when it's enabled or not?

Also, I'm not very clear about following points:

1) Does it occur every time or randomly?
2) Do you mean that if you just ignore it, the program still runs fine?

By the way, you haven't come back to some of your recent posts in this
interop newsgroup. Which seems also related to this question, I'm wondering
if you've seen my replies there.


Regards,
Walter Wang (wawang@online.microsoft.com, remove 'online.')
Microsoft Online Community Support

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Walter, I have seen your replies and I really appreciate them!!!

On this topic, I originally thought the error was comming from a
COMMunication object I'm using based on the stack trace in the two
exceptions I posted.

Now, I'm thinking the issue is comming from my WMWrapper (my public
interface to VB6/COM). I have an error I was throwing using the Throw key
word in my WeldMonitor object, which raised an event to the WMWrapper. Then
in this WMWrapper the COM/VB6 interface was throwing an unhandled exception
because I was raising the same event back to COM/VB6.

So, right now I'm not Throwing the exception and I'm raising an event (in
WeldMonitor) - Change 1.
I'm also not raising the event in my catch block in WMWrapper event (I'm
just not catching any COM HResults) - Change 2.

I'll look into the whole situation more when I have time. I have to get
this application into production.

thanks for your help! JerryM