Can someone explain me this error

[Perrone Alessandro]

Hi all
I am working on MacOsX verwsion of Swarm.
SimpleCBug runs fine, but when I try simpleObserverBug, I have the 
segmentation fault error.
I have changed a line on defobj.m, and now I have the following error
The gdb says
--
#6487 0x0005416c in -[Object_s dropAllocations:] (self=0x6d6fb0, 
_cmd=0xbff800f0, componentAlloc=1 '\001') at DefObject.m:371
#6488 0x0005b31c in -[FCall_c dropAllocations:] (self=0x6d6fb0, 
_cmd=0xbff800f0, componentAlloc=1 '\001') at FCall.m:1041
#6489 0x0005b3e0 in -[FCall_c drop] (self=0x6d6fb0, _cmd=0xbff800f0) 
at FCall.m:1046
#6490 0x0004f040 in parse_opt (key=7, arg=0x0, state=0xa) at Arguments.m:151
#6491 0x00085bf8 in group_parse (group=0x6d6430, state=0xbffff8fc, 
key=10, arg=0x0) at argp-parse.c:275
#6492 0x00086340 in parser_init (parser=0xbffff8e0, argp=0x6d6430, 
argc=1, argv=0x6d59f8, flags=-1073743620, input=0x6d5ab8) at 
argp-parse.c:560
#6493 0x00086b2c in argp_parse (argp=0xbffff860, argc=1, 
argv=0x6d59f8, flags=0, end_index=0x6d5b04, input=0x6d5ab8) at 
argp-parse.c:866
#6494 0x0004f874 in -[Arguments_c createEnd] (self=0x6d5ab8, 
_cmd=0xbff800f0) at Arguments.m:365
#6495 0x0004fb78 in +[Arguments_c 
createArgc:Argv:appName:version:bugAddress:options:optionFunc:inhibitExecutableSearchFlag:] 
(self=0x6d5ab8, _cmd=0xbff800f0, theArgc=1, theArgv=0xbffffc04, 
theAppName=0x22607c "bug\000"..., theVersion=0x226080 "2.1\000"..., 
theBugAddress=0x226084 "address@hidden"..., options=0x0, 
anOptionFunc=0, theInhibitExecutableSearchFlag=0 '\000') at 
Arguments.m:388
#6496 0x00004ee0 in _initSwarm_ (argc=1, argv=0xbffffc04, 
appName=0x22607c "bug\000"..., version=0x226080 "2.1\000"..., 
bugAddress=0x226084 "address@hidden"..., 
argumentsClass=0x400, options=0x0, optionFunc=0, forceBatchMode=0 
'\000', inhibitExecutableSearchFlag=0 '\000') at 
SwarmEnvironment.m:279
#6497 0x00002fdc in main (argc=-1074265056, argv=0xbff800f0) at main.m:20
#6498 0x00002b18 in _start (argc=1, argv=0xbffffc04, envp=0xbffffc0c) 
at /SourceCache/Csu/Csu-45/crt.c:267
#6499 0x00002998 in start ()
---
Any hints?
                                ALEX

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