NRE with "smart farming" enabled

[ZzZombo]

System.NullReferenceException: Object reference not set to an instance of an object
[Ref F3924148]
  at ReGrowthCore.MapComponent_SmartFarming.UpdateCommonCache () [0x00037] in <acfddc0d2a0c4a46856e0dc133c25af1>:0 
  at ReGrowthCore.MapComponent_SmartFarming.ProcessZones () [0x00000] in <acfddc0d2a0c4a46856e0dc133c25af1>:0 
  at ReGrowthCore.MapComponent_SmartFarming.MapComponentTick () [0x0003a] in <acfddc0d2a0c4a46856e0dc133c25af1>:0 
    - PREFIX tyler.rimdoctor: Void RimDoctor.Patch_Perf_Components:Prefix(Int64& __state)
    - POSTFIX tyler.rimdoctor: Void RimDoctor.Patch_Perf_Components:Postfix(Object __instance, Int64 __state)
  at Verse.MapComponentUtility.MapComponentTick (Verse.Map map) [0x00016] in <61e4173561894da49d210260257b5097>:0 
    - TRANSPILER net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)

I can trigger it on demand by going to the mods settings and closing them.