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Created attachment 10978 [details]
file that is causing the pre compilation error
Same issues In both Mac OS and Windows Virtual Machine
C:\Program Files (x86)\MSBuild\Xamarin\Android\Xamarin.Android.Common.targets(2,2): Error MSB4018: The "Aapt" task failed unexpectedly.
System.ArgumentException: An item with the same key has already been added.
at System.ThrowHelper.ThrowArgumentException(ExceptionResource resource)
at System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add)
at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__20.MoveNext() (MSB4018) (Japkin_Android)
line 1009 of the attached file
When Updated to latest version of Xamarin Studio, for some reason, some of the axml were duplicated with files with same name but xml as type. Removing them it started compiling again