As requested on screen, I am posting the Building Theme Error I got today (the first time I've run 1.15.0-f7):

ERROR: Object reference not set to an instance of an object
at BuildingThemes.Redirection.RedirectionHelper.RedirectCalls (System.Reflection.MethodInfo from, System.Reflection.MethodInfo to) [0x00000] in <filename unknown>:0
at BuildingThemes.Redirection.RedirectionUtil.RedirectMethod (System.Type targetType, System.Reflection.MethodInfo detour, Boolean reverse) [0x00000] in <filename unknown>:0
at BuildingThemes.Redirection.RedirectionUtil.RedirectMethod (System.Type targetType, System.Reflection.MethodInfo method, System.Collections.Generic.Dictionary`2 redirects, Boolean reverse) [0x00000] in <filename unknown>:0
at BuildingThemes.Redirection.RedirectionUtil.RedirectReverse (System.Type type, System.Type targetType, System.Collections.Generic.Dictionary`2 redirects, Boolean onCreated) [0x00000] in <filename unknown>:0
at BuildingThemes.Redirection.RedirectionUtil.RedirectType (System.Type type, Boolean onCreated) [0x00000] in <filename unknown>:0
at BuildingThemes.Redirection.Redirector`1[BuildingThemes.Detour.ZoneBlockDetour].Deploy () [0x00000] in <filename unknown>:0
at BuildingThemes.LoadingExtension.OnCreated (ILoading loading) [0x00000] in <filename unknown>:0
ERROR: Array index is out of range.
at BuildingThemes.BuildingThemesManager.RefreshAreaBuildings (.FastList`1[] m_areaBuildings, System.Collections.Generic.HashSet`1 enabledThemes, System.Collections.Generic.HashSet`1 blacklistedThemes, Boolean includeVariations) [0x00000] in <filename unknown>:0
at BuildingThemes.BuildingThemesManager.CompileDistrictThemes (Byte districtId) [0x00000] in <filename unknown>:0
at BuildingThemes.BuildingThemesManager.setThemeInfo (Byte districtId, System.Collections.Generic.HashSet`1 themes, Boolean blacklistMode) [0x00000] in <filename unknown>:0
at BuildingThemes.SerializableDataExtension.ApplyConfiguration (BuildingThemes.DistrictsConfiguration configuration) [0x00000] in <filename unknown>:0
at BuildingThemes.SerializableDataExtension.OnLoadData () [0x00000] in <filename unknown>:0