The Editor will crash on load if a class contains a CanvasRenderTarget2D that is set using CreateCanvasRenderTarget2D.

Adding a CanvasRenderTarget2D* UPROPERTY to a class and setting it using CreateCanvasRenderTarget2D will cause the Editor to crash on load.

CRASHREPORT:
[Link Removed]

UDN:
This was also reported by a licensee on UDN (https://udn.unrealengine.com/questions/229643/crash-in-46-when-creating-or-updating-a-canvasrend.html) who was able to trigger the crash by calling a function that created a CanvasRenderTarget2D. Retested in main (CL 2375748) and the crash still occurs.

ANSWERHUB:
https://answers.unrealengine.com/questions/153993/createcanvasrendertarget2d-461.html

WORKAROUND:
The Licensee that reported the issue narrowed down the issue to using whatever is returned by GetWorld->FeatureLevel. Using ERHIFeatureLevel::SM5 instead works for the Licensee.

1. Create a new project using the First Person Code template.
2. Build the project in Visual Studio.
3. Open the project in the Editor.
4. Add a new code class derived from StaticMeshActor.
5. Close the Editor.
6. In the .h file for the new class, add the following code:

   #include "Engine/CanvasRenderTarget2D.h"
   
   UPROPERTY()
   UCanvasRenderTarget2D* RenderTex;
   

7. In the .cpp file for the new class, add the following code:

   RenderTex = UCanvasRenderTarget2D::CreateCanvasRenderTarget2D(UCanvasRenderTarget2D::StaticClass(), 512, 512);
   

8. Build the project in Visual Studio.
9. Open the project in the Editor.