Tried the Epic Games Launcher on 2 different iMac, both exhibit the same behavior. Unreal Tournament banner comes up, black window opens. Black window stays unchanged on screen for a few seconds, then the app crashes to a crash report.
Mac OSX 10.10.5 (machine 1) and 10.10.4 (machine 2)
3.5 GHz Intel Core i7
32 GB RAM
NVIDIA GeForce GTX 775M 2Gb
Any ideas?
Hi forgeflow,
Try the suggestions here and see if anything works for you.
If it doesn’t work, follow the steps here to generate your Debug Logs. Then post them here.
I see there’s an update today, so, fingers crossed. 
Hi Forgeflow
If the update did not fix this please could you upload all the logs files in the log folder.
Also the logs are getting cut off so could you try to reproduce again, except this time, add “-forcelogflush” in addition to “-debuglogging” and post those logs here? So your commandline should look something like this: “C:\Program Files\Epic Games\Launcher\Portal\Binaries\Win64\EpicGamesLauncher.exe” -debuglogging -forcelogflush.
Hi forgeflow,
We haven’t heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you’re still experiencing this issue, please try the suggestion that Antony mentioned above. Then post back here with the requested info.
Cheers,
TJ