I have some weird issue with zeroeditor before (just now actually) when i save my map and like 20 mins. later zeroeditor crashes, the anoying part is, when i reload the same map in zeroeditor, the changes i made in the save arnt there, i always happens with DMI, so my lot wont change, any help will be appreciated, thanks in advance

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Sounds like your computer's graphics power or RAM may not be suited to ZeroEditor. So, what I've done is I've opened ZE and immediately gone to Camera settings in the upper-right corner and changed the viewing distance to 100. You can play around with your number, but 100 is always safe. I've never had a crash with it before.