1. What happened
Editor crashes when taking snapshots in 'BlendLogoAndIgnore_example03' or 'RuntimeAPI_example04' sample scenes from 'proSreenShot Solution' Asset Store package (https://www.assetstore.unity3d.com/en/#!/content/45571).

This is relevant for 5.6.2p2 only. It is not reproducible neither in 2017.1.0f3 nor in 2017.2.0b3 nor in 5.5.4f1.

2. How we can reproduce it using the example you attached
- Open 'RuntimeAPI_example04' or 'BlendLogoAndIgnore_example03' scene
- Play
- 'Take snapshot'
>>> Editor crashes without invoking bug reporter.
Attached Editor-prev.log has the stack trace:

Unity(33307,0x7fffab0e03c0) malloc: *** error for object 0x110281ee0: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
Stacktrace:
at (wrapper managed-to-native) UnityEditor.EditorGUIUtility.INTERNAL_CALL_RenderGameViewCamerasInternal (UnityEngine.RenderTexture,int,UnityEngine.Rect&,UnityEngine.Vector2&,bool) <IL 0x00011, 0x000bc>
at (wrapper managed-to-native) UnityEditor.EditorGUIUtility.INTERNAL_CALL_RenderGameViewCamerasInternal (UnityEngine.RenderTexture,int,UnityEngine.Rect&,UnityEngine.Vector2&,bool) <IL 0x00011, 0x000bc>
at UnityEditor.EditorGUIUtility.RenderGameViewCamerasInternal (UnityEngine.RenderTexture,int,UnityEngine.Rect,UnityEngine.Vector2,bool) [0x00009] in /Users/builduser/buildslave/unity/build/artifacts/generated/common/editor/EditorGUIUtilityBindings.gen.cs:642
at UnityEditor.GameView.OnGUI () [0x00243] in /Users/builduser/buildslave/unity/build/Editor/Mono/GameView/GameView.cs:752
...