segmentation fault on running stageros

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I am trying to run exploration demo in explore_stage as described in ( http://www.ros.org/wiki/explore_stage ). When I run "roslaunch explore_stage explore.launch" I get the following error.

[stage-1] process has died [pid 11456, exit code -11]. log files: /home/aravindhan/.ros/log/bd966512-423d-11e0-b00f-5c260a051546/stage-1*.log

From the launch file, I can see that the nodes stageros and static_transform_publisher are launched. So, I tried to launch stageros manually on command line with maze.world file as parameter. It gives a segmentation fault. Any help?

I am using diamondback.

stageros crashes even with the new format of world files.

I changed explore.launch file to launch "stage" instead of "stageros" and the roslaunch seemed to launch stage.

(Is it ok to change stageros to stage? What is the difference between the two.?)

But, after stage is launched I get this error

[Loading __name:=stage]err: unable to open world file __name:=stage : No such file or directory (/backup/Softwares/Stage-3.2.2-Source/libstage/worldfile.cc Load)

worldfile.cc is found in that path and the file permissions are right.

Has anybody run this demo before.? Finding a tough time to get his working.!

I am copying the stack trace of the crash below.

It crashes at line number 196 in stageros.cpp. Looking at the comments at line nos 193-194, is it a known issue? Any fixes for this?

193 // Apparently an Update is needed before the Load to avoid crashes on 194 // startup on some systems.

195 this->UpdateWorld();

196 this->world->Load(fname);

==28396== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==28396== Access not within mapped region at address 0x430

==28396== at 0x4E0C926: ??? (in /usr/lib/mesa/libGL.so.1.2)

==28396== by 0x467DC06: Stg::Canvas::resize(int, int, int, int) (canvas.cc:1288)

==28396== by 0x47082DA: Fl_Group::resize(int, int, int, int) (in /usr/lib/libfltk.so.1.1)

==28396== by 0x474470B: Fl_Window::resize(int, int, int, int) (in /usr/lib/libfltk.so.1.1)

==28396== by 0x4742B10: fl_handle(_XEvent const&) (in /usr/lib/libfltk.so.1.1)

==28396== by 0x47436AD: ??? (in /usr/lib/libfltk.so.1.1)

==28396== by 0x474394C: fl_wait(double) (in /usr/lib/libfltk.so.1.1)

==28396== by 0x46F1B94: Fl::wait(double) (in /usr/lib/libfltk.so.1.1)

==28396== by 0x46F1C3B: Fl::check() (in /usr/lib/libfltk.so.1.1)

==28396== by 0x468B36B: Stg::WorldGui::Load(char const*) (worldgui.cc:262)

==28396== by 0x8055AEE: StageNode::StageNode(int, char*, bool, char const) (stageros.cpp:196)

==28396== by 0x805A4BE: main (stageros.cpp:427)