Unreal Engine 4.11 Preview

I am using preview 6.

After doing a Full Rebuild of multiple sub levels (20 or more) in a Large Map using World Composition, I cannot save the maps, the editor hangs at ‘Updating File(s)Source Control Status’ dialogue, and doesn’t save the map files.

These same maps save extremely fast and and do not get this source control message when saved at any other time. We are using Perforce. I can re-open the level and save them all if I don’t rebuild the map first. Building each map individually also works, as does doing 4 or 5 at a time, there seems to be a threshold of of actors or maps getting rebuilt in one go, after which they cannot be saved.

  • EDIT - After turning off Source Control, I have the same problem saving maps after more than 20 have been rebuilt. The editor hangs on ‘Saving Map - name’ dialogue instead of the source control dialogue.

I have also tried with rebuilding combinations different sub levels, there is not one specific map that won’t save after being rebuild, it just seems to be the number of them.