Change Introduce EditorSettings.projectGenerationUserExtensions & EditorSettings.projectGenerationBuiltinExtensions. Improvement On mac, sometimes MonoDevelop & XamarinStudio would open both. Fixes Editor: Fix IMGUI brightness on GameView when in Linear mode. Editor: Fix memory thrashing when Dragging and Dropping between panels, when the dragged object had a CustomEditor with no Preview. PreferenceWindow: If external MD or XamarinStudio is selected, make it configurable to have .unityproj projectfiles be generated. PreferenceWindow: show "MonoDevelop Solution Properties" whenever an external MD or XamarinStudio is selected. WinRT: Fixed Networking sometimes throwing NotImplementedException The following are changes and fixes to 5.2 features and regressions... Fixes Editor: Fix crash regarding RemoveVisibleRoot Graphics: Fixed lights in deferred not working on some GPUs (e.g. Mac+Intel5300). UI: Fix issue where setting main texutre to 'NULL' would use a white texture instead of the default material texture.