Can anyone shed some light on this issue..

When installing webbrowser v1.5.1 plugin on vix image version 2.3 build 204 I get the following error:

Collected errors:
* satisfy_dependencies_for: cannot satisfy the following dependencies for enigma2-plugin-extensions-et-webbrowser:
*gst-plugin-rtmp * gst-plugin-mms*
* opkg_install_cmd: cannot install package enigma2-plugin-extensions-et-webbrowser.
execution finished!

Am I doing something wrong or do I have to update some drivers??