lightspark segfaults on troubleshooting's example 1_coordinates[1].swf

I was following the LightSpark trouble-shooting instructions at http://sourceforge.net/apps/trac/lightspark/wiki/Troubleshooting when it became clear my trouble was a seg-fault.

meermanr@ikari:~/Desktop/lightspark$ lsb_release -rd
Description: Ubuntu 11.10
Release: 11.10

meermanr@ikari:~/Desktop/lightspark$ apt-cache policy lightspark
lightspark:
  Installed: 0.5.1-0ubuntu1
  Candidate: 0.5.1-0ubuntu1
  Version table:
 *** 0.5.1-0ubuntu1 0
        500 http://gb.archive.ubuntu.com/ubuntu/ oneiric/universe amd64 Packages
        100 /var/lib/dpkg/status

I expected that running "lightspark 1_coordinates[1].swf" would launch an X11 window and display some noddy SWF example. What actually happened: an X11 window momentarily appears (maybe for 0.1s?) and then is gone, and my terminal shows "Segmentation Fault".

I've installed lightspark-dbg and captures a coredump, but I cannot see an symbols in when replaying it with gdb. So perhaps the bug is in some library used by lightspark? I can't be sure. Here's my session (with verbose logging, in case it helps):

meermanr@ikari:~/Desktop/lightspark$ lightspark --log-level 4 1_coordinates\[1\].swf
Lightspark version 0.5.1 Copyright 2009-2011 Alessandro Pignotti and others

(lightspark:13723): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(lightspark:13723): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(lightspark:13723): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",

(lightspark:13723): Gtk-WARNING **: Unable to locate theme engine in module_path: "pixmap",
TRACE: Mutex ThreadProfile waited 0 times
TRACE: Mutex ThreadProfile waited 0 times
TRACE: Mutex ThreadProfile waited 0 times
TRACE: Mutex ThreadProfile waited 0 times
TRACE: Mutex ThreadProfile waited 0 times
INFO: A plugin was found. Adding it to the list.
ERROR: findPluginInList: no plugin found in list
INFO: The plugin Pulse plugin output only was added with backend: pulseaudio
INFO: the selected backend is: pulseaudio
INFO: get_plugin: pulseaudio
TRACE: Building traits for :Object
TRACE: Building traits for flash.events:EventDispatcher
TRACE: Building traits for flash.display:LoaderInfo
CALLS: Calling Instance init flash.display:LoaderInfo
TRACE: Building traits for :Object
TRACE: Building traits for flash.events:EventDispatcher
CALLS: Calling Instance init flash.events:EventDispatcher
TRACE: Building traits for :Object
TRACE: Building traits for flash.events:EventDispatcher
TRACE: Building traits for flash.display:DisplayObject
TRACE: Building traits for flash.display:InteractiveObject
TRACE: Building traits for flash.display:DisplayObjectContainer
TRACE: Building traits for flash.display:Stage
CALLS: Calling Instance init flash.display:Stage
INFO: RenderThread this=0x1d331c0
INFO: Creating input thread
INFO: Running in local-with-filesystem sandbox
INFO: Compressed SWF file: Version 9
INFO: FrameRate 30
TRACE: Reading tag type: 69 at byte 15 with length 4 bytes
TRACE: FileAttributesTag Tag
INFO: Creating VM
INFO: Global is 0x1d054d0
TRACE: Building traits for :Object
TRACE: Reading tag type: 9 at byte 21 with length 3 bytes
TRACE: Reading tag type: 86 at byte 30 with length 11 bytes
TRACE: DefineSceneAndFrameLabelDataTag
TRACE: Reading tag type: 82 at byte 47 with length 30189 bytes
CALLS: DoABCDefineTag Name:
CALLS: ABCVm version 46.16
CALLS: Class [pakns:fl.managers] IFocusManagerComponent
CALLS: Flags:
CALLS: Sealed
CALLS: Interface
CALLS:

CALLS: Class [pakns:fl.core] InvalidationType
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.core:InvalidationType
CALLS: Super [pakns:] Object
CALLS:

CALLS: Class [pakns:fl.managers] IFocusManager
CALLS: Flags:
CALLS: Sealed
CALLS: Interface
CALLS:

CALLS: Class [pakns:fl.managers] StyleManager
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.managers:StyleManager
CALLS: Super [pakns:] Object
CALLS:

CALLS: Class [pakns:fl.managers] IFocusManagerGroup
CALLS: Flags:
CALLS: Sealed
CALLS: Interface
CALLS:

CALLS: Class [pakns:fl.controls] ButtonLabelPlacement
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.controls:ButtonLabelPlacement
CALLS: Super [pakns:] Object
CALLS:

CALLS: Class [pakns:fl.events] ComponentEvent
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.events:ComponentEvent
CALLS: Super [pakns:flash.events] Event
CALLS:

CALLS: Class [pakns:fl.managers] FocusManager
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.managers:FocusManager
CALLS: Super [pakns:] Object
CALLS: Implements
CALLS: [pakns:fl.managers] IFocusManager
CALLS:

CALLS: Class [pakns:fl.core] UIComponent
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.core:UIComponent
CALLS: Super [pakns:flash.display] Sprite
CALLS:

CALLS: Class [pakns:1_coordinates_fla] workarea_2
CALLS: Flags:
CALLS: ProtectedNS 1_coordinates_fla:workarea_2
CALLS: Super [pakns:flash.display] MovieClip
CALLS:

CALLS: Class [pakns:] TextInput_disabledSkin
CALLS: Flags:
CALLS: ProtectedNS TextInput_disabledSkin
CALLS: Super [pakns:flash.display] MovieClip
CALLS:

CALLS: Class [pakns:] TextInput_upSkin
CALLS: Flags:
CALLS: ProtectedNS TextInput_upSkin
CALLS: Super [pakns:flash.display] MovieClip
CALLS:

CALLS: Class [pakns:code] Drawing1
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS code:Drawing1
CALLS: Super [pakns:flash.display] MovieClip
CALLS:

CALLS: Class [pakns:fl.core] ComponentShim
CALLS: Flags:
CALLS: ProtectedNS fl.core:ComponentShim
CALLS: Super [pakns:flash.display] MovieClip
CALLS:

CALLS: Class [pakns:] focusRectSkin
CALLS: Flags:
CALLS: ProtectedNS focusRectSkin
CALLS: Super [pakns:flash.display] MovieClip
CALLS:

CALLS: Class [pakns:fl.controls] TextInput
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.controls:TextInput
CALLS: Super [pakns:fl.core] UIComponent
CALLS: Implements
CALLS: [pakns:fl.managers] IFocusManagerComponent
CALLS:

CALLS: Class [pakns:fl.controls] BaseButton
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.controls:BaseButton
CALLS: Super [pakns:fl.core] UIComponent
CALLS:

CALLS: Class [pakns:fl.controls] LabelButton
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.controls:LabelButton
CALLS: Super [pakns:fl.controls] BaseButton
CALLS: Implements
CALLS: [pakns:fl.managers] IFocusManagerComponent
CALLS:

CALLS: Class [pakns:fl.controls] Button
CALLS: Flags:
CALLS: Sealed
CALLS: ProtectedNS fl.controls:Button
CALLS: Super [pakns:fl.controls] LabelButton
CALLS: Implements
CALLS: [pakns:fl.managers] IFocusManagerComponent
CALLS:

CALLS: ABC Exec
TRACE: Reading tag type: 2 at byte 30242 with length 36 bytes
TRACE: DefineShapeTag
TRACE: Reading tag type: 39 at byte 30284 with length 16 bytes
TRACE: DefineSprite ID: 2
TRACE: Reading tag type: 26 at byte 30290 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30298 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30300 with length 0 bytes
TRACE: EndTag at position 30300
TRACE: EndDefineSprite ID: 2
TRACE: Reading tag type: 39 at byte 30306 with length 8 bytes
TRACE: DefineSprite ID: 3
TRACE: Reading tag type: 1 at byte 30312 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30314 with length 0 bytes
TRACE: EndTag at position 30314
TRACE: EndDefineSprite ID: 3
TRACE: Reading tag type: 32 at byte 30320 with length 93 bytes
TRACE: DefineShape3Tag
TRACE: Reading tag type: 39 at byte 30419 with length 16 bytes
TRACE: DefineSprite ID: 5
TRACE: Reading tag type: 26 at byte 30425 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30433 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30435 with length 0 bytes
TRACE: EndTag at position 30435
TRACE: EndDefineSprite ID: 5
TRACE: Reading tag type: 78 at byte 30437 with length 10 bytes
NOT_IMPLEMENTED: DefineScalingGridTag Tag on ID 5
TRACE: Reading tag type: 2 at byte 30453 with length 94 bytes
TRACE: DefineShapeTag
TRACE: Reading tag type: 39 at byte 30553 with length 16 bytes
TRACE: DefineSprite ID: 7
TRACE: Reading tag type: 26 at byte 30559 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30567 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30569 with length 0 bytes
TRACE: EndTag at position 30569
TRACE: EndDefineSprite ID: 7
TRACE: Reading tag type: 78 at byte 30571 with length 10 bytes
NOT_IMPLEMENTED: DefineScalingGridTag Tag on ID 7
TRACE: Reading tag type: 2 at byte 30587 with length 96 bytes
TRACE: DefineShapeTag
TRACE: Reading tag type: 39 at byte 30689 with length 16 bytes
TRACE: DefineSprite ID: 9
TRACE: Reading tag type: 26 at byte 30695 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30703 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30705 with length 0 bytes
TRACE: EndTag at position 30705
TRACE: EndDefineSprite ID: 9
TRACE: Reading tag type: 78 at byte 30707 with length 9 bytes
NOT_IMPLEMENTED: DefineScalingGridTag Tag on ID 9
TRACE: Reading tag type: 39 at byte 30722 with length 85 bytes
TRACE: DefineSprite ID: 10
TRACE: Reading tag type: 26 at byte 30728 with length 11 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30741 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 28 at byte 30743 with length 2 bytes
TRACE: RemoveObject2 Depth: 1
TRACE: Reading tag type: 26 at byte 30747 with length 16 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 30765 with length 11 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 30778 with length 11 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 30791 with length 12 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30805 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30807 with length 0 bytes
TRACE: EndTag at position 30807
TRACE: EndDefineSprite ID: 10
TRACE: Reading tag type: 2 at byte 30813 with length 67 bytes
TRACE: DefineShapeTag
TRACE: Reading tag type: 39 at byte 30886 with length 16 bytes
TRACE: DefineSprite ID: 12
TRACE: Reading tag type: 26 at byte 30892 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 30900 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 30902 with length 0 bytes
TRACE: EndTag at position 30902
TRACE: EndDefineSprite ID: 12
TRACE: Reading tag type: 26 at byte 30904 with length 8 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 83 at byte 30918 with length 2112 bytes
TRACE: DefineShape4Tag
TRACE: Reading tag type: 39 at byte 33036 with length 16 bytes
TRACE: DefineSprite ID: 14
TRACE: Reading tag type: 26 at byte 33042 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 33050 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 33052 with length 0 bytes
TRACE: EndTag at position 33052
TRACE: EndDefineSprite ID: 14
TRACE: Reading tag type: 32 at byte 33058 with length 272 bytes
TRACE: DefineShape3Tag
TRACE: Reading tag type: 39 at byte 33336 with length 42 bytes
TRACE: DefineSprite ID: 16
TRACE: Reading tag type: 26 at byte 33346 with length 20 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 33368 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 33376 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 33378 with length 0 bytes
TRACE: EndTag at position 33378
TRACE: EndDefineSprite ID: 16
TRACE: Reading tag type: 26 at byte 33384 with length 22 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 75 at byte 33412 with length 1193 bytes
TRACE: DefineFont3
TRACE: Reading tag type: 73 at byte 34611 with length 143 bytes
NOT_IMPLEMENTED: DefineFontAlignZonesTag Tag
TRACE: Reading tag type: 88 at byte 34760 with length 143 bytes
NOT_IMPLEMENTED: DefineFontNameTag Tag
TRACE: Reading tag type: 11 at byte 34909 with length 40 bytes
TRACE: DefineText ID 18
TRACE: Reading tag type: 26 at byte 34951 with length 9 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 11 at byte 34966 with length 40 bytes
TRACE: DefineText ID 19
TRACE: Reading tag type: 26 at byte 35008 with length 9 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 11 at byte 35023 with length 31 bytes
TRACE: DefineText ID 20
TRACE: Reading tag type: 26 at byte 35056 with length 10 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 11 at byte 35072 with length 31 bytes
TRACE: DefineText ID 21
TRACE: Reading tag type: 26 at byte 35105 with length 10 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 11 at byte 35121 with length 42 bytes
TRACE: DefineText ID 22
TRACE: Reading tag type: 26 at byte 35165 with length 10 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 35181 with length 25 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 35212 with length 25 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 35243 with length 19 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 35268 with length 19 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 26 at byte 35293 with length 27 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 22 at byte 35326 with length 115 bytes
TRACE: DefineShape2Tag
TRACE: Reading tag type: 11 at byte 35447 with length 36 bytes
TRACE: DefineText ID 24
TRACE: Reading tag type: 22 at byte 35489 with length 162 bytes
TRACE: DefineShape2Tag
TRACE: Reading tag type: 34 at byte 35657 with length 38 bytes
TRACE: Reading tag type: 26 at byte 35701 with length 25 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 32 at byte 35732 with length 179 bytes
TRACE: DefineShape3Tag
TRACE: Reading tag type: 39 at byte 35917 with length 16 bytes
TRACE: DefineSprite ID: 28
TRACE: Reading tag type: 26 at byte 35923 with length 6 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 35931 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 35933 with length 0 bytes
TRACE: EndTag at position 35933
TRACE: EndDefineSprite ID: 28
TRACE: Reading tag type: 76 at byte 35939 with length 157 bytes
TRACE: SymbolClassTag
TRACE: SymbolClassTag Exec
CALLS: Binding 16 1_coordinates_fla.workarea_2
CALLS: Binding 10 fl.controls.TextInput
CALLS: Binding 9 focusRectSkin
CALLS: Binding 7 TextInput_upSkin
CALLS: Binding 5 TextInput_disabledSkin
CALLS: Binding 3 fl.core.ComponentShim
CALLS: Binding 0 code.Drawing1
TRACE: Reading tag type: 26 at byte 36102 with length 23 bytes
TRACE: PlaceObject2
TRACE: Reading tag type: 1 at byte 36127 with length 0 bytes
TRACE: ShowFrame
TRACE: Reading tag type: 0 at byte 36129 with length 0 bytes
TRACE: EndTag at position 36129
INFO: End of parsing @ 36129
Chosen config 0x99
INFO: Fragment shader compilation
INFO: Vertex shader compilation
INFO: Vertex shader compilation
Segmentation fault (core dumped)
meermanr@ikari:~/Desktop/lightspark$

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: lightspark 0.5.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Mon Dec 26 16:08:57 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: lightspark
UpgradeStatus: No upgrade log present (probably fresh install)