Bug 14338

I have downloaded swfdec 0.5.90 and swfdec-mozilla 0.5.90, compiled on ubuntu gutsy (with some hardy packages, namely libsoup2.4-dev).

When I try to open this webpage:
http://www.circuit-fantasia.com/collections/circuit-collection/menus/circuit-contents.swf
(and click to play)

Firefox quits with sig11 signal.

Here is the backtrace:
lama@arpa:~/.mozilla$ firefox -g
/usr/lib/firefox/run-mozilla.sh -g /usr/lib/firefox/firefox-bin
MOZILLA_FIVE_HOME=/usr/lib/firefox
  LD_LIBRARY_PATH=/usr/lib/firefox:/usr/lib/firefox/plugins:/usr/lib/mre/mre
DISPLAY=:0.0
DYLD_LIBRARY_PATH=/usr/lib/firefox:/usr/lib/mre/mre
     LIBRARY_PATH=/usr/lib/firefox:/usr/lib/firefox/components:/usr/lib/mre/mre
       SHLIB_PATH=/usr/lib/firefox:/usr/lib/mre/mre
          LIBPATH=/usr/lib/firefox:/usr/lib/mre/mre
       ADDON_PATH=/usr/lib/firefox
      MOZ_PROGRAM=/usr/lib/firefox/firefox-bin
      MOZ_TOOLKIT=
        moz_debug=1
     moz_debugger=
/usr/bin/gdb /usr/lib/firefox/firefox-bin -x /tmp/mozargs.J13597
GNU gdb 6.6-debian
Copyright (C) 2006 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i486-linux-gnu"...
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(gdb) run
Starting program: /usr/lib/firefox/firefox-bin 
[Thread debugging using libthread_db enabled]
[New process 13600]
[New Thread -1222121792 (LWP 13600)]
[New Thread -1225557104 (LWP 13603)]
[New Thread -1235653744 (LWP 13604)]
[New Thread -1256916080 (LWP 13605)]
[New Thread -1269044336 (LWP 13606)]
[New Thread -1277437040 (LWP 13607)]
[New Thread -1288701040 (LWP 13608)]
[New Thread -1298027632 (LWP 13609)]
[New Thread -1306420336 (LWP 13610)]
[Thread -1306420336 (LWP 13610) exited]
[New Thread -1314813040 (LWP 13611)]
[Thread -1314813040 (LWP 13611) exited]
[New Thread -1314813040 (LWP 13612)]
[New Thread -1306420336 (LWP 13613)]
[New Thread -1323627632 (LWP 13614)]
[Thread -1306420336 (LWP 13613) exited]
[Thread -1323627632 (LWP 13614) exited]
[New Thread -1323627632 (LWP 13615)]
Unsupported movie property name with value "plugin"
Loading stream: http://www.circuit-fantasia.com/collections/circuit-collection/menus/circuit-contents.swf
unhandled event 19
firefox-bin: /build/buildd/libcairo-1.4.10/src/cairo-pen.c:324: _cairo_pen_find_active_cw_vertex_index: Assertion `i < pen->num_vertices' failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread -1222121792 (LWP 13600)]
0xffffe410 in __kernel_vsyscall ()
(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb76aaf35 in raise () from /lib/tls/i686/cmov/libc.so.6
#2  0xb76ac8b1 in abort () from /lib/tls/i686/cmov/libc.so.6
#3  0xb76a408e in __assert_fail () from /lib/tls/i686/cmov/libc.so.6
#4  0xb747203f in ?? () from /usr/lib/libcairo.so.2
#5  0xb74c6f0a in ?? () from /usr/lib/libcairo.so.2
#6  0xb74c6edc in ?? () from /usr/lib/libcairo.so.2
#7  0x00000144 in ?? ()
#8  0xb74c6f20 in ?? () from /usr/lib/libcairo.so.2
#9  0xbfca9d40 in ?? ()
#10 0xbfcaa354 in ?? ()
#11 0x09b88a70 in ?? ()
#12 0xb74d0d9c in ?? () from /usr/lib/libcairo.so.2
#13 0x00582214 in ?? ()
#14 0xbfca9e40 in ?? ()
#15 0xbfca9e68 in ?? ()
#16 0xb747077e in ?? () from /usr/lib/libcairo.so.2
#17 0xbfca9f70 in ?? ()
#18 0xbfca9e40 in ?? ()
#19 0xbfca9e48 in ?? ()
#20 0xb747ad65 in ?? () from /usr/lib/libcairo.so.2
#21 0xbfcaa094 in ?? ()
#22 0xbfca9d28 in ?? ()
---Type <return> to continue, or q <return> to quit---
#23 0x00000000 in ?? ()
(gdb) quit
The program is running.  Exit anyway? (y or n) y