Bug 39152 - `xamarin-component.exe restore` throws System.ArgumentException: An item with the same key has already been added
Summary: `xamarin-component.exe restore` throws System.ArgumentException: An item with...
Alias: None
Product: Components
Classification: Xamarin
Component: Xamarin Studio Integration ()
Version: N/A
Hardware: PC Mac OS
: --- normal
Target Milestone: ---
Assignee: Jon Dick
Depends on:
Reported: 2016-02-26 07:19 UTC by Prashant Cholachagudda
Modified: 2016-03-02 15:17 UTC (History)
4 users (show)

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

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Description Prashant Cholachagudda 2016-02-26 07:19:08 UTC
The latest xamarin-component.exe from the nuget throws System.ArgumentException when we try to restore the components.
This happens on both Mac and Windows

#Steps to reproduce
1. Create Xamarin project
2. Add any component from the Component store
3. Add XamarinComponent v1.1.0.25 to the project
4. Execute xamarin-component.exe restore .\App1.sln

#Actual Result

The restore command throws an exception - 

The following output and exception then occurs:
INFO (restore): Computed cookie jar path: C:\Users\prashantvc\.xamarin-credentials
INFO (restore): [*] Restoring googleglass v2.1.0
INFO (restore): Downloading googleglass 2.1.0

Unhandled Exception: 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.ObjectModel.KeyedCollection`2.AddKey(TKey key, TItem item)
at System.Collections.ObjectModel.KeyedCollection`2.InsertItem(Int32 index, TItem item)
at Mono.Options.OptionSet.InsertItem(Int32 index, Option item)
at Mono.Options.OptionSet.Add(String prototype, String description, Action`1 action, Boolean hidden)
at Xamarin.Components.CheckCommandHandler.GetOptionSet()
at Xamarin.Components.CheckCommandHandler.Invoke(String[] args)
at Xamarin.Components.Utility.RunCheckWorkflowForComponent(ICommandHandler handler, Boolean staging, Boolean development, String id, String version)
at Xamarin.Components.RestoreCommandHandler.DownloadComponentFromServer(String server, String componentId, String componentVersion, Boolean isTrial)
at Xamarin.Components.RestoreCommandHandler.Invoke(String[] args)
at Xamarin.Components.MainClass.Main(String[] args)

# Expected result
The restore command should restore the components in the solution

Note that everything works just fine with v1.1.0.23