Fixed issue: 8140
http://hercules.ws/board/tracker/issue-8140-toucan-npc-error-message/
That error usually happens when the player clicked on a NPC that has the view id
of a mob, to activate this kind of npc it's needed to be in a 2,2 range
from it. If the OnTouch area of a npc, coincides with the 2,2 range of
another it's expected that the OnTouch event be put first in stack, because
unit_walktoxy_timer is executed before any other function in this case.
So it's best practice to put an 'end;' before OnTouch events in npcs that
have view ids of mobs to avoid this kind of error.
Also updated script_commands.txt to add this recomendation.