segmentation fault problem

[BEN SAID Lamjed thesard FTRD/DTL/LAN]

I'm using Swarm-2.1.1 on Windows 98. When running my simulation I get the
following segmentation fault (I've joined the back trace for this error
hoping that it helps)

I get this segmentation error when I try to display a frame including lines
to input certain variables. The program portion relative to this is below. I
don't have this problem if the frame contains ONLY the age segmentation
menu. 

Thanks for help.

- menuSegmentation
{
if (msegmentation)
{
//fprintf(_obj_xdebug, "Age Segmentation already exists!\n");  
[msegmentation drop];
msegmentation = nil;
}
else
    {
    msegmentation = [Frame create: [self getZone]];
    [msegmentation setWindowTitle:  " Population segments" ];
    formSeg = [Form createParent:msegmentation ];
// age segmentation 
    ageSegFlag = 0;
    [formSeg addLineName: "Age segmentation" Boolean: &ageSegFlag];
    [formSeg addLineName: "age min" Int: &ageSegMin ];
    [formSeg addLineName: "age max" Int: &ageSegMax ]; 


//when adding these lines I get the segmentation fault
// social class segmentation
    socialClassSegFlag = 0;
    [formSeg addLineName: "Social class segmentation" Boolean:
&socialClassSegFlag];
    [formSeg addLineName: "social class" Int: &socialClassSeg ];
    
// opinion leader segmentation
    opinionLeaderSegFlag = 0;
    [formSeg addLineName: "Opinion Leaders" Boolean: &opinionLeaderSegFlag];
    } 
return self;
} 

 Program received signal SIGSEGV, Segmentation fault.
TkWinGetDrawableDC (display=0x4614cb0, d=0, state=0x256f8e8)
    at /src/tk/win/tkWinDraw.c:151
151     /src/tk/win/tkWinDraw.c: No such file or directory.
(gdb) bt
#0  TkWinGetDrawableDC (display=0x4614cb0, d=0, state=0x256f8e8)
    at /src/tk/win/tkWinDraw.c:151
#1  0x663097d3 in XCopyArea (display=0x4614cb0, src=0, dest=74595344, 
    gc=0x4674c98, src_x=0, src_y=0, width=4294967252, height=1, dest_x=0, 
    dest_y=0) at /src/tk/win/tkWinDraw.c:307
#2  0x663063de in TkpRealDisplayButton (clientData=0x4733eb8, force=1)
    at /src/tk/win/tkWinButton.c:655
#3  0x66305908 in TkpDisplayButton (clientData=0x4733eb8)
    at /src/tk/win/tkWinButton.c:354
#4  0x660474c9 in TclServiceIdle () at
/src/tcl/win/../generic/tclTimer.c:681
#5  0x6603d8a8 in Tcl_DoOneEvent (flags=32)
    at /src/tcl/win/../generic/tclNotify.c:760
#6  0x66341f9a in MapFrame (clientData=0x46ca2d0)
    at /src/tk/win/../generic/tkFrame.c:889
#7  0x660474c9 in TclServiceIdle () at
/src/tcl/win/../generic/tclTimer.c:681
#8  0x6603d8a8 in Tcl_DoOneEvent (flags=-3)
    at /src/tcl/win/../generic/tclNotify.c:760
#9  0x69cb2884 in tkobjc_doOneEventSync ()
    at /src/Swarm/swarm/src/tkobjc/common.m:143
#10 0x69c545f5 in _i_ControlPanel__setStateStopped (self=0x46620b8, 
    _cmd=0x69dce668) at /src/Swarm/swarm/src/simtoolsgui/ControlPanel.m:133
#11 0x69c544f9 in _i_ControlPanel__startInActivity_ (self=0x46620b8, 
    _cmd=0x69dcee58, activityID=0x4721558)
    at /src/Swarm/swarm/src/simtoolsgui/ControlPanel.m:100
#12 0x69c554b4 in _i_GUISwarm__go (self=0x4662f38, _cmd=0x41105c)
    at /src/Swarm/swarm/src/simtoolsgui/GUISwarm.m:49
#13 0x4060de in main (argc=2, argv=0x45a0bd8) at main.m:37
#14 0x610022c5 in _size_of_stack_reserve__ ()
#15 0x61002855 in _size_of_stack_reserve__ ()
#16 0x40f5b7 in cygwin_crt0 ()
#17 0x40103b in mainCRTStartup ()
#18 0xbff8b560 in libtk80_a_iname ()
#19 0xbff8b412 in libtk80_a_iname ()
#20 0xbff89dd5 in libtk80_a_iname ()
Cannot access memory at address 0x82edafec



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