Question

I am seeing the following error in the event log. It is coming from our ASP.Net application. I am having trouble tracking down what is causing the error. Any suggestions appreciated!

• OS: Windows Server 2000
• WebServer: IIS 6
• Application: ASP.Net v3.5

Error Log

[MachineName] has logged the following
Error for IIS

Details: ComputerName=[ComputerName]
User=Not specified Logfile=Application
Type=Error EventType=1
SourceName=ASP.NET 2.0.50727.0
Category=0 CategoryString=Not
specified EventCode=1334
EventID=-1073740490
TimeGenerated=20091125101806.000000-360
TimeWritten=20091125101806.000000-360
Message=An unhandled exception
occurred and the process was
terminated.

Application ID: DefaultDomain Process
ID: 1440 Exception:
System.Runtime.Serialization.SerializationException
Message: Unable to find assembly
‘Company.Common, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=null’.

StackTrace: at
System.Runtime.Serialization.Formatters.Binary.BinaryAssemblyInfo.GetAssembly()
at
System.Runtime.Serialization.Formatters.Binary.ObjectReader.GetType(BinaryAssemblyInfo
assemblyInfo, String name) at
System.Runtime.Serialization.Formatters.Binary.ObjectMap..ctor(String
objectName, String[] memberNames,
BinaryTypeEnum[] binaryTypeEnumA,
Object[] typeInformationA, Int32[]
memberAssemIds, ObjectReader
objectReader, Int32 objectId,
BinaryAssemblyInfo assemblyInfo,
SizedArray assemIdToAssemblyTable)
at
System.Runtime.Serialization.Formatters.Binary.__BinaryParser.ReadObjectWithMapTyped(BinaryObjectWithMapTyped
record) at
System.Runtime.Serialization.Formatters.Binary.__BinaryParser.Run()
at
System.Runtime.Serialization.Formatters.Binary.ObjectReader.Deserialize(HeaderHandler
handler, __BinaryParser serParser,
Boolean fCheck, Boolean
isCrossAppDomain, IMethodCallMessage
methodCallMessage) at
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize(Stream
serializationStream, HeaderHandler
handler, Boolean fCheck, Boolean
isCrossAppDomain, IMethodCallMessage
methodCallMessage) at
System.Runtime.Remoting.Channels.CrossAppDomainSerializer.DeserializeObject(MemoryStream
stm) at
System.AppDomain.Deserialize(Byte[]
blob) at
System.AppDomain.UnmarshalObject(Byte[]
blob)

Answer 1

I created a custom unhanded exception module, which allowed retrieval of more information about the origin of the bug, and the eventual resolution of the issue.

Here is a link to a codeplex project that has code for an unhanded exception module:
http://unhandledexception.codeplex.com/SourceControl/changeset/view/80132