Bug 61112 - Visual Studio compilation error : The "XamlCTask" task failed unexpectedly.
Summary: Visual Studio compilation error : The "XamlCTask" task failed unexpectedly.
Status: NEW
Alias: None
Product: Visual Studio Extensions
Classification: Xamarin
Component: iOS (show other bugs)
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: ---
Assignee: Bugzilla
URL:
Depends on:
Blocks:
 
Reported: 2017-12-17 23:40 UTC by Rad
Modified: 2017-12-20 15:38 UTC (History)
3 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:


Attachments
log zip file (1.98 KB, application/x-zip-compressed)
2017-12-17 23:40 UTC, Rad
Details


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Status:
NEW

Description Rad 2017-12-17 23:40:43 UTC
Created attachment 26024 [details]
log zip file

The application was working fine. All of a sudden (Without changing ANYTHING), the Visual studio compiler started throwing this error message:


any idea what is this?

Please see attached.



Severity	Code	Description	Project	File	Line	Suppression State
Error		The "XamlCTask" task failed unexpectedly.
System.ArgumentException: An item with the same key has already been added.

Server stack trace: 
   at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
   at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
   at Xamarin.Forms.Xaml.XamlParser.ParseXamlElementFor(IElementNode node, XmlReader reader)
   at Xamarin.Forms.Xaml.XamlParser.ReadNode(XmlReader reader, Boolean nested)
   at Xamarin.Forms.Xaml.XamlParser.ParseXamlElementFor(IElementNode node, XmlReader reader)
   at Xamarin.Forms.Xaml.XamlParser.ReadNode(XmlReader reader, Boolean nested)
   at Xamarin.Forms.Xaml.XamlParser.ParseXamlElementFor(IElementNode node, XmlReader reader)
   at Xamarin.Forms.Xaml.XamlParser.ReadNode(XmlReader reader, Boolean nested)
   at Xamarin.Forms.Xaml.XamlParser.ParseXamlElementFor(IElementNode node, XmlReader reader)
   at Xamarin.Forms.Xaml.XamlParser.ParseXaml(RootNode rootNode, XmlReader reader)
   at Xamarin.Forms.Build.Tasks.XamlTask.ParseXaml(Stream stream, TypeReference typeReference)
   at Xamarin.Forms.Build.Tasks.XamlCTask.Execute(IList`1& thrownExceptions)
   at Xamarin.Forms.Build.Tasks.XamlTask.Execute()
   at System.Runtime.Remoting.Messaging.StackBuilderSink._PrivateProcessMessage(IntPtr md, Object[] args, Object server, Object[]& outArgs)
   at System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(IMessage msg)

Exception rethrown at [0]: 
   at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
   at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
   at Microsoft.Build.Framework.ITask.Execute()
   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
   at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()	App2
Comment 1 Rad 2017-12-20 15:38:13 UTC
Any update on this please?