I have asset Chronos Time Control.. after installing Playmaker i have this errors:
PlayerSettings Validation: Requested build target group (6) doesn't exist; #define symbols for scripting won't be added.
UnityEditor.PlayerSettings:SetScriptingDefineSymbolsForGroup(BuildTargetGroup, String)
Chronos.Addon:AddDefine() (at Assets/Chronos/Source/Utilities/Editor/AddonDetector.cs:117)
Chronos.Addon:Check(Boolean) (at Assets/Chronos/Source/Utilities/Editor/AddonDetector.cs:65)
Chronos.AddonDetector:CheckForAddons(Boolean) (at Assets/Chronos/Source/Utilities/Editor/AddonDetector.cs:31)
Chronos.AddonDetector:OnPostprocessAllAssets(String[], String[], String[], String[]) (at Assets/Chronos/Source/Utilities/Editor/AddonDetector.cs:46)
UnityEditor.AssetPostprocessingInternal:PostprocessAllAssets(String[], String[], String[], String[], String[])
what it means? how can i fix it?