It's also worth noting that some don't have an 'Open' button – you need to drag your photos onto the filter's icon in Explorer instead. Provided you've used the default location during setup, you'll find them in C:\Program Files\Google\Nik Collection. Instead, you need to track the filters down using Windows Explorer. Google Nik Collection won't appear in your Program list after you've run the installer, and you won't find any desktop shortcuts.
