[RESOLVED] [2005] Handling NullReferenceExceptions

I've recently made a major modification to the program I'm working on, and now it compiles fine, but when I try to use some of the new code, I'm generating NullReferenceExceptions. Usually, I'd handle this by tracing where the exception was generated and adjusting the code to handle it, but this exception is not giving me any information about that.

The only additional information I have (aside from the stack trace below) is "No Symbols are loaded for any call stack frame. The source code cannot be displayed." At this point my options are OK and Show Disassembly.

While I think I understand the error messages, I don't understand why I'm not getting any additional information. Worse, I cannot think of any solution to the problem other than rolling back the changes then reintroducing them slowly to find the problem...

Any thoughts?

Code:

'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_32\mscorlib\2.0.0.0__b77a5c561934e089\mscorlib.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities\8.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System.Windows.Forms\2.0.0.0__b77a5c561934e089\System.Windows.Forms.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System\2.0.0.0__b77a5c561934e089\System.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System.Drawing\2.0.0.0__b03f5f7f11d50a3a\System.Drawing.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\Microsoft.VisualStudio.HostingProcess.Utilities.Sync\8.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualStudio.HostingProcess.Utilities.Sync.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\Documents and Settings\ChinchenS\Desktop\LoadCaseTrial\LoadCaseTrial\bin\Debug\LoadCaseTrial.vshost.exe', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_32\System.Data\2.0.0.0__b77a5c561934e089\System.Data.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System.Deployment\2.0.0.0__b03f5f7f11d50a3a\System.Deployment.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System.Xml\2.0.0.0__b77a5c561934e089\System.Xml.dll', No symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\Microsoft.VisualBasic\8.0.0.0__b03f5f7f11d50a3a\Microsoft.VisualBasic.dll', No symbols loaded. The thread 0x8d8 has exited with code 0 (0x0). 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\Documents and Settings\ChinchenS\Desktop\LoadCaseTrial\LoadCaseTrial\bin\Debug\LoadCaseTrial.exe', Symbols loaded. 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System.Runtime.Remoting\2.0.0.0__b77a5c561934e089\System.Runtime.Remoting.dll', No symbols loaded. A first chance exception of type 'System.DllNotFoundException' occurred in System.Windows.Forms.dll 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\System.Configuration\2.0.0.0__b03f5f7f11d50a3a\System.Configuration.dll', No symbols loaded. Test 'LoadCaseTrial.vshost.exe' (Managed): Loaded 'C:\WINNT\assembly\GAC_MSIL\Accessibility\2.0.0.0__b03f5f7f11d50a3a\Accessibility.dll', No symbols loaded. A first chance exception of type 'System.NullReferenceException' occurred in LoadCaseTrial.exe A first chance exception of type 'System.Reflection.TargetInvocationException' occurred in mscorlib.dll A first chance exception of type 'System.NullReferenceException' occurred in System.dll