Could not load 'System.Core, Version 2.0.5.0'

[uchitha]

Hi,

I'm observing the above exception running Humanizer 1.11.3.0 on a production box with IIS6/.Net 4 / ASP.Net MVC 3.

Found a similar issue reported with AutoMapper (AutoMapper/AutoMapper#383) and wondering whether it could be the same root cause.

Complete stack trace follows;

[FileLoadException: Could not load file or assembly 'System.Core, Version=2.0.5.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e, Retargetable=Yes' or one of its dependencies. The given assembly name or codebase was invalid. (Exception from HRESULT: 0x80131047)]
Humanizer.TimeSpanHumanizeExtensions.Humanize(TimeSpan timeSpan, Int32 precision) +0
BHP.ROS.Statusboard.DAL.Ampla.Dtos.DowntimeDto.get_DurationText() +177

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
System.RuntimeMethodHandle._InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeType typeOwner) +0
System.RuntimeMethodHandle.InvokeMethodFast(IRuntimeMethodInfo method, Object target, Object[] arguments, Signature sig, MethodAttributes methodAttributes, RuntimeType typeOwner) +152
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks) +393
System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +38
System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +35
System.Web.Script.Serialization.JavaScriptSerializer.SerializeCustomObject(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +763
System.Web.Script.Serialization.JavaScriptSerializer.SerializeValueInternal(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +1692
System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +146
System.Web.Script.Serialization.JavaScriptSerializer.SerializeEnumerable(IEnumerable enumerable, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +182
System.Web.Script.Serialization.JavaScriptSerializer.SerializeValueInternal(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +1647
System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +146
System.Web.Script.Serialization.JavaScriptSerializer.SerializeDictionary(IDictionary o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +663
System.Web.Script.Serialization.JavaScriptSerializer.SerializeValueInternal(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +1576
System.Web.Script.Serialization.JavaScriptSerializer.SerializeValue(Object o, StringBuilder sb, Int32 depth, Hashtable objectsInUse, SerializationFormat serializationFormat) +146
System.Web.Script.Serialization.JavaScriptSerializer.Serialize(Object obj, SerializationFormat serializationFormat) +117
System.Web.Mvc.JsonResult.ExecuteResult(ControllerContext context) +280
System.Web.Mvc.<>c__DisplayClass1c.<InvokeActionResultWithFilters>b__19() +33
System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func1 continuation) +784900 System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList1 filters, ActionResult actionResult) +265
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +784976
System.Web.Mvc.Controller.ExecuteCore() +159
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +335
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +62
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +20
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +54
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +453
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +371

[MehdiK]

Hi @uchitha,

Thanks for reporting this. I haven't seen this issue before; neither myself nor reported. I will try something to see if it makes a difference.

[MehdiK]

Alright. I just released v1.16.4 to NuGet with a potential fix. Please give that a shot and let me know if it makes any difference.

P.S. Didn't mean to close this. Got closed by GitHub on the merge of the PR.

[MehdiK]

Have you had a chance to give this a shot @uchitha?

[uchitha]

Mehdi,

Will check this out once I go to office tomorrow and get access to this server. Thanks for the quick fix.

[MehdiK]

Thanks. Let's hope this is a fix :)

[uchitha]

Hi Mehdi,

The update didn't fix the problem unfortunately. Let me give you a few more details.

The server having the error has only up to .Net framework 4.0 (Beside being Win2003/IIS6). The other servers having .Net framework 4.5 (Beside being Win2008/IIS 7.5) are fine.

[MehdiK]

I am not sure tbh. Have you tried patching your server with this as per the link you sent?

[uchitha]

That's the issue as I don't have the ownership over server configuration.

So may be as per the issue with Automapper (AutoMapper/AutoMapper#383) there are 2 potential fixes.

1. Install the patch - http://stackoverflow.com/questions/13871267/unable-to-resolve-assemblies-that-use-portable-class-libraries
   OR
2. Dynamically load the assemblies

Both of which is not possible for me. So for the time being I've disabled Humanizer.

[MehdiK]

Ah, ok. Sorry it didn't work out :(

Hopefully you can use Humanizer in a future project :)