Both version 2.3 and 2.3a give me this stack trace when I click on the UI button that this mod adds. I am on build 32.16, 64bit. Other mods are ModelLoader, ORGM Guns, BCUtils (1.2.0), RMBetterShouts & RMLockpickingMod. -----------------------------------------STACK TRACE-----------------------------------------function: showWindow -- file: spraypaintMenu.lua line # 61function: showWindowToolbar -- file: spraypaintMenu.lua line # 239function: onMouseUp -- file: ISButton.lua line # 55java.lang.RuntimeException: Object tried to call nil in showWindow at se.krka.kahlua.vm.KahluaUtil.fail(KahluaUtil.java:91) at se.krka.kahlua.vm.KahluaThread.luaMainloop(KahluaThread.java:948) at se.krka.kahlua.vm.KahluaThread.call(KahluaThread.java:162) at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1726) at se.krka.kahlua.vm.KahluaThread.pcall(KahluaThread.java:1641) at se.krka.kahlua.integration.LuaCaller.pcall(LuaCaller.java:63) at zombie.ui.UIElement.onMouseUp(UIElement.java:874) at zombie.ui.UIElement.onMouseUp(UIElement.java:836) at zombie.ui.UIManager.update(UIManager.java:1065) at zombie.GameWindow.logic(GameWindow.java:582) at zombie.GameWindow.run(GameWindow.java:1174) at zombie.GameWindow.maina(GameWindow.java:982) at zombie.gameStates.MainScreenState.main(MainScreenState.java:162) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at com.exe4j.runtime.LauncherEngine.launch(Unknown Source) at com.exe4j.runtime.WinLauncher.main(Unknown Source)-----------------------------------------STACK TRACE-----------------------------------------The window does not show up afterwards, however the hotkeys work fine (save for the UI hotkey).