Can't open UE4.20

Development Platform & Builds
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1

Heading ##[Sorry for my english]

Last year i was programming a proyect in UE4.17 but at the end of the year i had a problem with the OS boot so i had to reinstall Win10. After that, i installed UE4.20 to try the new stuff but It crashes when i try to open the editor (yes, i tried to open it on shortcut and Epic Games Launcher) or throws me this error message right now

280342-anotacion-2019-06-20-155900.png

But when doesn’t throw me this error, throws me this other one

280343-anotacion-2019-06-20-160557.png
280343-anotacion-2019-06-20-160557.png747×594 44.6 KB

And sometimes it launch correctly and i can use it normally, its kinda random but i wanna fix this once for all.
Thank you.

2

Omg. Same thing. I don’t know what to do

3

Thanks for answering me, but i started it in a new project. And the problem is that i can’t open not even the Proyect Picker.

4

Hi, you need to rebuild yor project to new verion, or download 4.17 version from launcher.

How to rebuild:

In Documentation: