So thanks to Commy on Arma 3 Discord, we have finally been able to fix the issue whereby Zeus would not show some of our units, objects or buildings     Here's how to ensure your items show up in Zeus   1. make sure  each item has scope = 2; scopecurator =2; 2. make sure in the cfgpatches class, units[] has a full set of working classes listed with no mistakes/ scope 0 objects, or incorrect classnames - see example   3. if vehicle has scopeCurator = 2 & is present in cfgPatches but crew is scope = 1; or scopeCurator = 0 or not present in cfgPatches or crew = ""; or the crew pbo is not preloaded, then the whole vehicle is not visible in zeus.   4. make sure your cfgpatches class name is in preloadaddons list[] in cfgaddons. The downside to preloading all of your addons, is that it uses a lot of RAM. So choose the best set of mods that you really need for Zeus.   Beware in more complex mod packs, you might have multiple instances of cfgaddons throughout your config family. In this case, if you accidentally duplicate a class of cfgpatches in your list[] array, the entire list in that instance of cfgaddons will fail to load in Zeus. For this reason I recommend having only one cfgaddons class in your mod, with a full list of your correct cfgpatches classnames in the list, OR only have one cfgpatches entry in your list and have one cfgaddons class containing that list in each of your pbo /addons. So distributed or centralised, but don't mix the two approaches.   You can use configviewer to browse cfgaddons to see which classes are loaded In the example below, all of our cfgpatches classes are listed in one single central list in class cfgaddons { class preloadaddons {class unsung { list[]= {etc}; }; };};     and that's it! simple.   demo example of the distributed way of doing it, (as opposed to the equally valid centralised way shown above in config editor)   class CfgPatches { class UNS_Buildings { units[] = { "LAND_UNS_Hootch" }; }; }; class CfgAddons { class PreloadAddons { class UNS_Buildings { list[] = { "UNS_Buildings" }; }; }; }; class CfgVehicles { class House; class LAND_UNS_Hootch: House { scope = 2; scopeCurator = 2; vehicleClass = "aa_uns_buildings_W"; editorSubcategory = "aa_uns_buildings_W"; editorCategory = "UNS_All_Obj"; displayName = "Hootch"; //etc }; };