InvokeCommandAction exception when CommandParameter is NULL

[Depechie]

I have a GridView hooked up to an observable collection of type Person ( POCO ).
I want to reroute the tapped event to a command in my viewmodel through use of InvokeCommandAction.
By using this I also use a CommandParameter, this is bound to a SelectedPerson ( of type Person ) property on the viewmodel in TwoWay mode ( general binding no x:Bind ).

If the selectedPerson is NULL and the Observable collection is NULL you'll get an invalid cast exception of the TappedRoutedEventArgs to Person.

I would have thought I would get NULL as input in my method ( that is linked to the command ).

Changing every reference to Person in this chain to object fixes the problem, but that would not be that great I guess.
Also when there are items in the observable collection everything works.

Repo: https://github.com/Depechie/TapCommand
Due to issue #102 I was unable to test this with the samples project to debug myself...

[premiaware]

I have the same problem, I have apply the change "Fixed #103: Check for CommandParamenter value set instead of non-null" but when compile sample the problem is
Error XBF generation error code 0x07da.

[pedrolamas]

@premiaware that is caused by #102, not related with my fix for this issue!

[Depechie]

Would be nice if this would get into the main stable nuget release :/ any move on #102 to get this going?

[ScottIsAFool]

Paging @jonwchu

[Depechie]

All fun and games to close it, but when will the nuget be updated? :)