UE4.15.1 crashes when I import a jpg

Hi,

Also, it happens when I import a jpg in a very new project, just to test.

Here is the text:

LoginId:
EpicAccountId:

You do not have any debugging symbols required to display the callstack for this crash.

My mail is

I uninstalled and reinstalled again. it also crashes when I change ground material. It is a mess.

LoginId:
EpicAccountId:

You do not have any debugging symbols required to display the callstack for this crash.