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0000776Dwarf FortressDwarf Mode -- Interface, Announcements: Message Spampublic2010-04-07 23:092010-12-11 08:59
Toady One 
0000776: Butcher cancels Butcher an Animal: Could not find path.
It seems that if there's an object related to a job in an unrevealed area that shows up on the stock screen (such as a butcherable corpse that is 45 layers deep when only 36 are currently visible) dwarves are unable to path to the object but would still very much like to try.
So here's what I did...

I embarked on a cave that goes down to an expansive underground cavern that is about 57 layers deep (explored in adventurer first.) I can only see down around 27 layers, the rest being unrevealed.

First caravan (dwarven) embarks... and heads down into the cave. They pass the threshold into the unrevealed darkness and they dissapear from the unit list (I watched this happen explicitly.)

A few minutes later one of my butchers spergs out trying to reach a "Large Rat mutilated corpse" which I can only imagine was slain by the caravan and is sitting down in the darkness waiting to be butchered. The Large Rat is on the Unit List as Deceased (I can't recall if he was there immediately before he died, but I have seen the rat wander around before on the lowest visible layer.

The corpse does however show up on the stocks screen, and is on layer -45, which is nine layers below what I can see.
No tags attached.
child of 0000018closed Toady One Pathfinding fails to update after map changes 
Issue History
2010-04-07 23:09DCBomBNew Issue
2010-04-07 23:13DCBomBNote Added: 0001959
2010-04-07 23:14DCBomBNote Edited: 0001959bug_revision_view_page.php?bugnote_id=0001959#r592
2010-04-08 00:21FootkerchiefRelationship addedchild of 0000018
2010-04-11 18:35FootkerchiefTag Attached: Still Present in 31.03?
2010-04-12 12:36FootkerchiefNote Added: 0003098
2010-04-12 12:36FootkerchiefStatusnew => resolved
2010-04-12 12:36FootkerchiefFixed in Version => 0.31.03
2010-04-12 12:36FootkerchiefResolutionopen => fixed
2010-04-12 12:36FootkerchiefAssigned To => Footkerchief
2010-04-12 12:40FootkerchiefStatusresolved => assigned
2010-04-12 12:40FootkerchiefAssigned ToFootkerchief => Toady One
2010-04-12 12:41FootkerchiefStatusassigned => resolved
2010-04-12 13:12FootkerchiefStatusresolved => assigned
2010-04-12 13:13FootkerchiefStatusassigned => resolved
2010-04-12 13:13FootkerchiefFixed in Version0.31.03 =>
2010-04-12 13:13FootkerchiefResolutionfixed => duplicate
2010-06-04 10:06FootkerchiefTag RenamedStill Present in 31.03? => Fixed in 31.03?
2010-06-09 06:46Toady OneStatusresolved => closed
2010-12-11 08:59DwarfuTag Detached: Fixed in 31.03?

2010-04-07 23:13   
(edited on: 2010-04-07 23:14)
This has also been happening for gathering spider webs since I first built a loom here.

2010-04-12 12:36   
This and other issues are being marked resolved because they fit the symptoms of the general pathing bug described by issues 0000018 and 0000070. If this issue represents an additional bug, it will most likely present different symptoms in 31.03, and a new report should be submitted.