Thx for putting so much effort into this.
Sorry but i cannot give you the feedback on this now, because i already had cleaned my ssd and installed “Windows 10 technical preview” on it.
Then i installed Unrealeditor 4,4.3 and the 4.5 preview.
Both are working fine !
I think you are right that it had to do with the old directx 9.
I was working (and still am} to make a " level" based on the “Cyan World engine” also known as Plasma. That game-engine is very dated and using directx9 and one of the reasons i want to switch to unreal and make something completely new on my own. May be later i can answer you, i have a system backup of the old config, but that will take some time.
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