2019-03-19 18:49:22,014 - DEBUG - [Thread-13] UM.Backend.Backend._backendLog [101]: [Backend] [ERROR] Trying to retrieve setting with no value given: 'minimum_support_area'
2019-03-19 18:49:22,175 - DEBUG - [MainThread] UM.Backend.Backend._logSocketState [195]: Socket state changed to Closing
2019-03-19 18:49:22,179 - DEBUG - [MainThread] UM.Backend.Backend._onSocketError [217]: Socket debug: Arcus Error (13): Closing socket because other side requested close.
2019-03-19 18:49:22,181 - DEBUG - [MainThread] UM.Backend.Backend._logSocketState [197]: Socket state changed to Closed
2019-03-19 18:49:22,182 - DEBUG - [MainThread] CuraEngineBackend.CuraEngineBackend._onBackendQuit [811]: Backend quit with return code 2. Resetting process and socket.
2019-03-19 18:49:23,960 - INFO - [MainThread] cura.Machines.MachineErrorChecker._setResult [188]: Error check finished, result = False, time = 7.4s
2019-03-19 18:49:25,493 - DEBUG - [MainThread] cura.AutoSave._onTimeout [48]: Autosaving preferences, instances and profiles
Maybe the new setting "minimum_support_area" causes the issue, but I can't find it in the settings menu (showng all settings).
And another mystery is that the progress bar reaches almost 50% when support is enabled but only about 30% when it isn't 🤔