IndexOutOfRangeException: Index was outside the bounds of the array.
at Archetypes.BuildUMA (Archetype _archetype, UMA.UMAData _umaData, SlotLibrary _slotLib, OverlayLibrary _overlayLib, Entity _entity, System.String _profileName, System.Boolean _showPreviewSlots, System.Boolean _useCustomColors, UnityEngine.Color hair, UnityEngine.Color eye, UnityEngine.Color skin, PlayerProfile _playerProfile) [0x00398] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EModelUMA.fullyBuildUMA () [0x00008] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EModelUMA.GenerateOneUMA (EntityClass _ec) [0x000f2] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EModelUMA.createModel (World _world, EntityClass _ec) [0x00048] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EModelUMA.Init (World _world, Entity _entity) [0x000ca] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at Entity.InitEModel () [0x00061] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at Entity.Init (System.Int32 _entityClass) [0x0000d] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EntityAlive.Init (System.Int32 _entityClass) [0x00000] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EntityPlayer.Init (System.Int32 _entityClass) [0x0002e] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EntityPlayerLocal.Init (System.Int32 _entityClass) [0x00000] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at EntityFactory.CreateEntity (EntityCreationData _ecd) [0x0017c] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at GameManager+<StartAsServer>d__138.MoveNext () [0x00531] in <39cf8b713b17414c9e5ddfff01d6df19>:0
at UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) [0x00026] in <544fca0986d54eca88fc7c56e2a8b4b4>:0
That's your error. Something to do with the character you've chosen? Not my area of expertise, so maybe someone else can give you more info.