- Four finger tap on your device, it tells you what your device supports. ETC1 is always safe. In 4.1, the editor will detect the formats supported on your device for the Launch menu (pretty sure that feature made it in in time for 4.1)
- You need logs. “adb logcat -s UE4 -s Debug” on the commandline will help, and there are also some GUI tools to get the logging data.
- How are you cooking? Even a clean cook shouldn’t be long, since we cache the slow parts (the texture compression, etc). So it should be a matter of opening and saving packages. Also, we shipped with the DerivedDataCache for some texture formats. If you cook for Android, it will take a long time the first time because it is compressing ALL texture formats.