My editor crashes every time I open any project. I don’t see the editor, just the error message. This did happen after I had to force reboot during an update of UE4, but I reinstalled and it still happens. The log file is included.
Have your tried reinstalling your graphics card driver. The crash happens because unreal is failing to create some rendering resources.
It didn’t happen a month before I had to reboot 
but I’ll try that.
If it still happens after updating drivers can you also try adding -d3debug to the command line of the editor and post the log here?