help for brand new modder

[PaulCox501208]

how can i solve the bold type items
### Courseplay: installed into 32 vehicles
Script loaded: FollowMe.lua (v1.0.0.17)
Error: Not all prerequisites of specialization steerable are fulfilled
LUA call stack:
dataS/scripts/utils/Utils.lua (1702) : printCallstack
dataS/scripts/utils/StoreItemsUtil.lua (117) : getFilename
dataS/scripts/main.lua (2838) : loadStoreItem
dataS/scripts/gui/MPLoadingScreen.lua (465) : loadMod
dataS/scripts/gui/MPLoadingScreen.lua (259) : initializeLoading
dataS/scripts/gui/MPLoadingScreen.lua (345) : startLocal
dataS/scripts/gui/MPLoadingScreen.lua (234) : onSavegameLoaded
dataS/scripts/gui/CareerScreen.lua (627) : loadSavegameAndStart
dataS/scripts/gui/ModSelectionScreen.lua (184) : startGame
dataS/scripts/gui/elements/ButtonElement.lua (319) : raiseCallback
dataS/scripts/gui/elements/FocusManager.lua (254) : onFocusActivate
dataS/scripts/gui/elements/GuiElement.lua (304) : checkElement
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/Gui.lua (303) : update
dataS/scripts/main.lua (1918) : update
Warning (LUA): 'loadXMLFile': Argument 2 has wrong type. Expected: String. Actual: Nil
..\..\..\src\base\scripting\lua\LuaScriptSystem.cpp (640): expectedType == Value::VoidType
LUA call stack:
dataS/scripts/utils/StoreItemsUtil.lua (118) : loadXMLFile
dataS/scripts/main.lua (2838) : loadStoreItem
dataS/scripts/gui/MPLoadingScreen.lua (465) : loadMod
dataS/scripts/gui/MPLoadingScreen.lua (259) : initializeLoading
dataS/scripts/gui/MPLoadingScreen.lua (345) : startLocal
dataS/scripts/gui/MPLoadingScreen.lua (234) : onSavegameLoaded
dataS/scripts/gui/CareerScreen.lua (627) : loadSavegameAndStart
dataS/scripts/gui/ModSelectionScreen.lua (184) : startGame
dataS/scripts/gui/elements/ButtonElement.lua (319) : raiseCallback
dataS/scripts/gui/elements/FocusManager.lua (254) : onFocusActivate
dataS/scripts/gui/elements/GuiElement.lua (304) : checkElement
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/Gui.lua (303) : update
dataS/scripts/main.lua (1918) : update
Warning (LUA): 'getXMLRootName': Argument 1 has wrong type. Expected: Int. Actual: Nil
..\..\..\src\base\scripting\lua\LuaScriptSystem.cpp (640): expectedType == Value::VoidType
LUA call stack:
dataS/scripts/utils/StoreItemsUtil.lua (120) : getXMLRootName
dataS/scripts/main.lua (2838) : loadStoreItem
dataS/scripts/gui/MPLoadingScreen.lua (465) : loadMod
dataS/scripts/gui/MPLoadingScreen.lua (259) : initializeLoading
dataS/scripts/gui/MPLoadingScreen.lua (345) : startLocal
dataS/scripts/gui/MPLoadingScreen.lua (234) : onSavegameLoaded
dataS/scripts/gui/CareerScreen.lua (627) : loadSavegameAndStart
dataS/scripts/gui/ModSelectionScreen.lua (184) : startGame
dataS/scripts/gui/elements/ButtonElement.lua (319) : raiseCallback
dataS/scripts/gui/elements/FocusManager.lua (254) : onFocusActivate
dataS/scripts/gui/elements/GuiElement.lua (304) : checkElement
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/GuiElement.lua (319) : update
dataS/scripts/gui/elements/Gui.lua (303) : update
dataS/scripts/main.lua (1918) : update

Error: Running LUA method 'update'.
dataS/scripts/utils/StoreItemsUtil.lua(121) : attempt to concatenate local 'baseXMLName' (a nil value)

Edit don_apple: moved from german to english section.

[Inkslinger98]

never worked with outside scripts but it looks like your missing a line or two in your moddesc. what type of mod is it?

<specialization name="attacherJoints"/>
<specialization name="lights"/>
<specialization name="animatedVehicle"/>
<specialization name="cylindered"/>
<specialization name="motorized"/>
<specialization name="steerable"/>
<specialization name="drivable"/>
<specialization name="honk"/>
<specialization name="washable"/>
<specialization name="mountable"/>

these are some of the basics for steerable trucks. if nothing else I've found you can do away completely with the custom ID in the moddesc and just tag it as something basic in the xml file. IE. <vehicle type="trailer"> that makes it use perquisites from the base in game trailers instead of using what specializations are defined in moddesc. it's a shortcut as I'm new to this myself and had issues with this same error.