[4.80 preview 2] Clicking "Launch" button causes UE4 Editor to hang until it crashes

I mean the “Launch” button on toolbar of UE4 editor(deploying game on Windows platform). It worked successfully only once, then I kept getting this issue when clicking on the “Launch” button. Even after I tried creating a new simple project, the same issue continues.

However, File->Package Project->Windows from the menu works properly.

Hi Awesome_Junior_Miss,

The Launch On crash from both Windows and Mac is a known issue for the current 4.8 preview releases. For reference, the JIRA for the issue is UE-15445. It has been fixed with the intention of getting it into the 4.8 release proper, however I don’t know if it will make it into any of the subsequent previews.

Thanks very much for your report!