Hey there—ugh, that’s never a fun way to kick off a project 
If Unreal crashes right after starting a new one in 5.4 or 5.5, a good first step is to check if any default plugins are triggering it—sometimes a legacy plugin or even a recent engine update can cause conflicts. I usually try launching the editor with -noinifiles to rule out config issues.
Have you noticed if this happens more often with specific templates or project settings? Might help narrow it down.