Unable to open internal editors like materials, meshes and matinee etc

Development Asset Creation
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1

Hi everyone.

I’m experiencing an issue when I try to open the material editor, mesh editor matinee etc. Basically anything within the main editor that opens in a new window.

Here is a screenshot of my problem http://i.snag.gy/2YRt8.jpg

Whenever I try, the new window shows up beside the main editor on the task bar in white, like it’s not fully executed.

What I’ve tried.

I’ve tried a different project.
I’ve verified Unreal.
I’ve upgraded from 4.9 to 4.9.1.
I’ve reset editor preferences to default.
I’ve ran unreal from both launcher and visual studio.
I’ve removed my old projects, the engine, re-downloaded and reinstalled.
Problem persists.

Thank you for any help.

2

If you can open Editor Preferences try resetting the settings to default and see if it helps.

3

I’ve reset editor preferences to default, still the same.
Reopened project just in case, still can’t open anything in a new window.

Message log opens in a new window but shows no errors, just a few map check warnings and source control flow logs.

4

The underlying cause is still unknown but to solve the symptom of internal editor windows not opening:

  1. Click the “Window” tab in the top left of the editor.

  2. Under the layout section near the bottom, click “Reset Layout”.

  3. Done.