Hello,
In the material editor, whenever I select a float parameter followed by a static bool parameter or a static switch parameter, the UE4 Editor crashes instantly. This also happens often (but not always) when selecting both nodes at the same time with a selection box.
Version: Version: 4.10.1-2791327+++depot+UE4-Releases+4.10
(maybe related to Multiple selection in material editor - crash - Asset Creation - Unreal Engine Forums)