<CollectionView Grid.Column="2" ItemsSource="{Binding Commands.Commands}">
            <CollectionView.ItemsLayout>
                <LinearItemsLayout Orientation="Horizontal"/>
            </CollectionView.ItemsLayout>
            <CollectionView.ItemTemplate>
                <DataTemplate x:DataType="{x:Type base:RelayCommand}">
                    <ImageButton Padding="0" CornerRadius="0" Command="{Binding Command}"/>
                </DataTemplate>
            </CollectionView.ItemTemplate>
        </CollectionView>

if i write this Command Property: Command=”{Binding Command}” im getting the fallowing error at
compiletime: The input string is in the wrong format.

But if i write it while im debugging its working. But cant recompile it.

removing the properties with binding let me compile the code.
writing the binding while debugging => works