TypeLoadException: Could not resolve type with token 01000037

Unity version: 2017.2.0b11

When searching for the Nuget package, the error message after is shown.

I wonder why I cannot use the Nuget package installed by the visual studio?

TypeLoadException: Could not resolve type with token 01000037 (from typeref, class/assembly System.ServiceModel.Syndication.SyndicationFeed, System.ServiceModel.Web, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35)
NugetForUnity.NugetPackageSource.Search (System.String searchTerm, System.Boolean includeAllVersions, System.Boolean includePrerelease, System.Int32 numberToGet, System.Int32 numberToSkip) (at <b8b5bb12b8434a5285935caa38a54646>:0)
NugetForUnity.NugetHelper.Search (System.String searchTerm, System.Boolean includeAllVersions, System.Boolean includePrerelease, System.Int32 numberToGet, System.Int32 numberToSkip) (at <b8b5bb12b8434a5285935caa38a54646>:0)
NugetForUnity.NugetWindow.UpdateOnlinePackages () (at <b8b5bb12b8434a5285935caa38a54646>:0)
NugetForUnity.NugetWindow.DrawOnlineHeader () (at <b8b5bb12b8434a5285935caa38a54646>:0)
NugetForUnity.NugetWindow.DrawOnline () (at <b8b5bb12b8434a5285935caa38a54646>:0)
NugetForUnity.NugetWindow.OnGUI () (at <b8b5bb12b8434a5285935caa38a54646>:0)
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:305)
Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.
System.Reflection.MonoMethod.Invoke (System.Object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:313)
System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) (at /Users/builduser/buildslave/mono/build/mcs/class/referencesource/mscorlib/system/reflection/methodbase.cs:229)
UnityEditor.HostView.Invoke (System.String methodName, System.Object obj) (at /Users/builduser/buildslave/unity/build/Editor/Mono/HostView.cs:285)
UnityEditor.HostView.Invoke (System.String methodName) (at /Users/builduser/buildslave/unity/build/Editor/Mono/HostView.cs:278)
UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition) (at /Users/builduser/buildslave/unity/build/Editor/Mono/HostView.cs:251)
UnityEditor.DockArea.OldOnGUI () (at /Users/builduser/buildslave/unity/build/Editor/Mono/GUI/DockArea.cs:383)
UnityEngine.Experimental.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt) (at /Users/builduser/buildslave/unity/build/Runtime/UIElements/Managed/IMGUIContainer.cs:143)
UnityEngine.Experimental.UIElements.IMGUIContainer.HandleEvent (UnityEngine.Experimental.UIElements.EventBase evt) (at /Users/builduser/buildslave/unity/build/Runtime/UIElements/Managed/IMGUIContainer.cs:213)
UnityEngine.Experimental.UIElements.EventDispatcher.DispatchEvent (UnityEngine.Experimental.UIElements.EventBase evt, UnityEngine.Experimental.UIElements.BaseVisualElementPanel panel) (at /Users/builduser/buildslave/unity/build/Runtime/UIElements/Managed/EventDispatcher.cs:182)
UnityEngine.Experimental.UIElements.UIElementsUtility.DoDispatch (UnityEngine.Experimental.UIElements.BaseVisualElementPanel panel) (at /Users/builduser/buildslave/unity/build/Runtime/UIElements/Managed/UIElementsUtility.cs:207)
UnityEngine.Experimental.UIElements.UIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at /Users/builduser/buildslave/unity/build/Runtime/UIElements/Managed/UIElementsUtility.cs:72)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at /Users/builduser/buildslave/unity/build/Runtime/IMGUI/Managed/GUIUtility.cs:175)

[UkonnRa]

New question, maybe it is a Mac only problem…

System.Net.WebException: Error: SecureChannelFailure (Security) ---> System.DllNotFoundException: Security
  at (wrapper managed-to-native) Mono.AppleTls.AppleTlsContext:SSLCreateContext (intptr,Mono.AppleTls.SslProtocolSide,Mono.AppleTls.SslConnectionType)
  at Mono.AppleTls.AppleTlsContext.InitializeConnection () [0x0000c] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.AppleTls.AppleTlsContext.StartHandshake () [0x00015] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.MobileAuthenticatedStream.ProcessHandshake (Mono.Net.Security.AsyncProtocolRequest asyncRequest, Mono.Net.Security.AsyncOperationStatus status) [0x00004] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.AsyncProtocolRequest.ProcessOperation (Mono.Net.Security.AsyncOperationStatus status) [0x0006b] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.AsyncProtocolRequest.ProcessOperation () [0x0000d] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.AsyncProtocolRequest.StartOperation () [0x0003c] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.AsyncProtocolRequest.StartOperation (Mono.Net.Security.AsyncOperation operation) [0x00024] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.MobileAuthenticatedStream.ProcessAuthentication (System.Net.LazyAsyncResult lazyResult) [0x00057] in <344dc4d3f1ad41809df78607b6121a41>:0 
--- End of stack trace from previous location where exception was thrown ---
  at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builduser/buildslave/mono/build/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:151 
  at Mono.Net.Security.MobileAuthenticatedStream.ProcessAuthentication (System.Net.LazyAsyncResult lazyResult) [0x00078] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.MobileAuthenticatedStream.AuthenticateAsClient (System.String targetHost, System.Security.Cryptography.X509Certificates.X509CertificateCollection clientCertificates, System.Security.Authentication.SslProtocols enabledSslProtocols, System.Boolean checkCertificateRevocation) [0x0000c] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.Private.MonoSslStreamWrapper.AuthenticateAsClient (System.String targetHost, System.Security.Cryptography.X509Certificates.X509CertificateCollection clientCertificates, System.Security.Authentication.SslProtocols enabledSslProtocols, System.Boolean checkCertificateRevocation) [0x00006] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at Mono.Net.Security.MonoTlsStream.CreateStream (System.Byte[] buffer) [0x0007b] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at System.Net.WebConnection.CreateStream (System.Net.HttpWebRequest request) [0x00073] in <344dc4d3f1ad41809df78607b6121a41>:0 
   --- End of inner exception stack trace ---
  at System.Net.HttpWebRequest.EndGetResponse (System.IAsyncResult asyncResult) [0x00058] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at System.Net.HttpWebRequest.GetResponse () [0x0000e] in <344dc4d3f1ad41809df78607b6121a41>:0 
  at NugetForUnity.NugetPackageSource.GetPackagesFromUrl (System.String url) [0x00089] in <4e881643001441888fae657e4de10c62>:0 
UnityEngine.Debug:LogErrorFormat(String, Object[])
NugetForUnity.NugetPackageSource:GetPackagesFromUrl(String)
NugetForUnity.NugetPackageSource:Search(String, Boolean, Boolean, Int32, Int32)
NugetForUnity.NugetHelper:Search(String, Boolean, Boolean, Int32, Int32)
NugetForUnity.NugetWindow:UpdateOnlinePackages()
NugetForUnity.NugetWindow:DrawOnlineHeader()
NugetForUnity.NugetWindow:DrawOnline()
NugetForUnity.NugetWindow:OnGUI()
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

[GlitchEnzo]

Unfortunately, I’ve never tested NuGetForUnity on a Mac.

Searching on Google showed me that at least one other person is having a similar problem with using .NET 4.6 in Unity 2017 on Mac: https://issuetracker.unity3d.com/issues/mac-dot-net-4-dot-6-system-dot-net-dot-webexception-error-in-net-4-dot-6

I’ll continue to investigate, but without a Mac progress will be slow.