Indeed, there was a problem when using SDK references with version 2016.2.504. It is caused by an issue in our SDK configuration for Universal Windows Platform. We have released a fix -- you can download the latest bits from your account, you need version 2016.2.520.
Alternatively, you can use the following workaround -- copy the entire folder
C:\Program Files (x86)\Telerik\UI for Universal Windows Platform Q2 2016\Binaries\Telerik.UI.Xaml.Grid.UWP\Assets\FilterFlyout
C:\Program Files (x86)\Telerik\UI for Universal Windows Platform Q2 2016\SDKs\Telerik UI for Universal Windows Platform\Redist\CommonConfiguration\neutral\Telerik.UI.Xaml.Grid.UWP\Assets
The result being that there are two folders in the Assets folder -- FilterFlyout
Please, accept our apologies for the inconvenience caused.
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