disable official walkpath..if your between an obstacle you can only do no more than 14 walk path cells beyond that you cannot go to that cell...
its an npc problem..you must change close to end if your using a script without dialog..because its more appropriate to use end than close..
i've done to checking the script of the npc healer and w/ walkpath also, i think the problem is in the update of rathena updates.
my problem is in the Healer NPC i also try to change the Healer NPC.
same problem occurred my character stock on a place, but before the updates its working fine