Sims cannot move while Marvine's animated ladder present

[luciusblackstar]

My sims freeze in whatever pose they were in when I switched to "Build Mode" and do not move, nor does time advance. When I turn on testingcheatsenabled, I get a pop-up error message which recurs every time I press something other than "delete." If I press "delete," the ladder is deleted and my game returns to normal.

Here is the text of the error, taken from the log:


Build: 1.17.0.66
at Oct 11 2008,15:12:07

Object id: 2081
name: Stairs - Straight - Quaint - Lo 0,1
Stack size: 3
Error: Attribute number out of range.
Iterations: 1
Frame 2:
Stack Object id: 0
Node: 10
Tree: id 8196 name 'Init - Lo Stub' version -32749
from StairsStraightGlobals
Prim state: 0
Params: Locals:
Frame 1:
Stack Object id: 0
Node: 0
Tree: id -1 name 'No behavior' version 0
from
Prim state: 1
Params: Locals:
Frame 0:
Stack Object id: 0
Node: 0
Tree: id 8201 name 'Function - Main' version -32754
from StairsStraightGlobals
Prim state: 0
Params: Locals:

And the popup message I get in game is attached as an image.