UI\Inspections\InspectionResultsViewModel.cs(495,40): error CS1061: 'ICollectionView' does not contain a definition for 'Where' and no accessible extension method 'Where' accepting a first argument of type 'ICollectionView' could be found (are you missing a using directive or an assembly reference?) [C:\projects\rubberduck\Rubberduck.Core\Rubberduck.Core_jmlei0ly_wpftmp.csproj]
UI\Inspections\InspectionResultsViewModel.cs(498,45): error CS1579: foreach statement cannot operate on variables of type '?' because '?' does not contain a public instance definition for 'GetEnumerator' [C:\projects…