nil obj?

[Daniel Calhoun]

A revised version of my model is halting between 1st and 2nd time-steps. 
Is there any way that I can extract useful info from the following error
messages, especially about what KIND of object the process is not finding?

-- Dan Calhoun
address@hidden



      0 [main] PLAINS 1187 handle_exceptions: Exception:
STATUS_ACCESS_VIOLATION

1012027 [main] PLAINS 1187 stackdump: Dumping stack trace to
PLAINS.EXE.stackdump


(gdb) bt
#0  _i_FCall_c__setMethod_inObject_ (self=0x4652c60, _cmd=0x69e0434c,
    mtd=0x40649c, obj=0x0) at /src/Swarm/swarm/src/defobj/FCall.m:291
#1  0x69ce857e in _c_FCall_c__create_target_selector_arguments_ (
    self=0x45aeca8, _cmd=0x69dfae54, aZone=0x462fbe8, target=0x0,
    aSel=0x40649c, fa=0x46928c8) at /src/Swarm/swarm/src/defobj/FCall.m:406
#2  0x69ccc061 in _i_ActionTo_c___createCall__ (self=0x468f8c0,
    _cmd=0x69dfae64, theTarget=0x0)
    at /src/Swarm/swarm/src/activity/Action.m:275
.... etc.


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