New Post: ICollectionView throw Entity Framework Attach exception

I never get this running... but i found the problem.... the Entity framework... I have a full error explanation: Stackoverflow

But i never found the solution... and i maked my project again zero using EF directly... i teste it a little and jumped to UI to not kill my time... i think to find a solution on the future...

UPDATE
This framework does not fit very well on WPF MVVM applications... because of ICollectionView (PRISM 5).
What you can do is remove your mapping or valueinjector from your archteture(if you are using MVVM+WPF) and use the MVVM Model as the same as the EF entities. Resolved.(or half of it)