Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
Type: System.TypeLoadException
Source: mscorlib
at System.ModuleHandle.ResolveMethod(RuntimeModule module, Int32 methodToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount)
at System.ModuleHandle.ResolveMethodHandleInternalCore(RuntimeModule module, Int32 methodToken, IntPtr[] typeInstantiationContext, Int32 typeInstCount, IntPtr[] methodInstantiationContext, Int32 methodInstCount)
at System.ModuleHandle.ResolveMethodHandleInternal(RuntimeModule module, Int32 methodToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
at System.Reflection.CustomAttributeData..ctor(RuntimeModule scope, CustomAttributeRecord caRecord)
at System.Reflection.CustomAttributeData.GetCustomAttributes(RuntimeModule module, Int32 tkTarget)
at System.Reflection.CustomAttributeData.GetCustomAttributesInternal(RuntimeAssembly target)
at System.Resources.ManifestBasedResourceGroveler.GetNeutralResourcesLanguage(Assembly a, UltimateResourceFallbackLocation& fallbackLocation)
at System.Resources.ResourceManager.CommonSatelliteAssemblyInit()
at System.Resources.ResourceManager..ctor(Type resourceSource)
at System.ComponentModel.ComponentResourceManager..ctor(Type t)
at ..P3btQI1hZ7()
at ...ctor()
at Fiddler.frmViewer.dX9tuyvkNw(Object )
at Fiddler.frmViewer.ERDt4XkYjk(String[] )
Type: System.TypeLoadException
Source: mscorlib
at System.ModuleHandle.ResolveMethod(RuntimeModule module, Int32 methodToken, IntPtr* typeInstArgs, Int32 typeInstCount, IntPtr* methodInstArgs, Int32 methodInstCount)
at System.ModuleHandle.ResolveMethodHandleInternalCore(RuntimeModule module, Int32 methodToken, IntPtr[] typeInstantiationContext, Int32 typeInstCount, IntPtr[] methodInstantiationContext, Int32 methodInstCount)
at System.ModuleHandle.ResolveMethodHandleInternal(RuntimeModule module, Int32 methodToken, RuntimeTypeHandle[] typeInstantiationContext, RuntimeTypeHandle[] methodInstantiationContext)
at System.Reflection.CustomAttributeData..ctor(RuntimeModule scope, CustomAttributeRecord caRecord)
at System.Reflection.CustomAttributeData.GetCustomAttributes(RuntimeModule module, Int32 tkTarget)
at System.Reflection.CustomAttributeData.GetCustomAttributesInternal(RuntimeAssembly target)
at System.Resources.ManifestBasedResourceGroveler.GetNeutralResourcesLanguage(Assembly a, UltimateResourceFallbackLocation& fallbackLocation)
at System.Resources.ResourceManager.CommonSatelliteAssemblyInit()
at System.Resources.ResourceManager..ctor(Type resourceSource)
at System.ComponentModel.ComponentResourceManager..ctor(Type t)
at ..P3btQI1hZ7()
at ...ctor()
at Fiddler.frmViewer.dX9tuyvkNw(Object )
at Fiddler.frmViewer.ERDt4XkYjk(String[] )
Hey there,
Can you elaborate a bit more about your issue? Let us know the following:
- What is the operating system that are you trying to run Fiddler Classic on?
- What are the exact steps needed to reproduce the issue - is it happening after installation, after startup, or after a specific action is taken within the app?