Please download and install OWB version from: http://fabportnawak.free.fr/owb/owb-morphos-1.17.lha and http://fabportnawak.free.fr/owb/plugins/swfdec_plugin-1.2.lha if you need to use Flash.
OWB/cairo combination from MorphOS 3.0 ISO might cause various issues. This version fixes it.