problem trying to manage content complements adobe flash movie (Swfdec SWF player)

Binary package hint: firefox-3.0

problem trying to manage content complements adobe flash movie (Swfdec SWF player)
Taken from the error console, trying to search for another adobe flash player complement.

Error: error en el procesamiento de referencia a entidad externa
Código Fuente: jar:file:///usr/lib/xulrunner-1.9.0.9/chrome/toolkit.jar!/content/global/bindings/wizard.xml
Linea: 7, Columna: 3
Código fuente:
  %wizardDTD;

ProblemType: Bug
Architecture: amd64
DistroRelease: Ubuntu 9.04
NonfreeKernelModules: fglrx
Package: firefox-3.0 3.0.9+nobinonly-0ubuntu0.9.04.1
ProcEnviron:
 LANG=es_CL.UTF-8
 SHELL=/bin/bash
SourcePackage: firefox-3.0
Uname: Linux 2.6.28-11-generic x86_64