I finally got it to work. Here is what I done:
- Uninstalled everything
- reinstalled MP + latest SVN
- installed the MCE Replacement Plugin
- unchecked any remote from the remotes tab
- in the MCE Replacement Plugin config screen:
- under Options I ticked Extended Login & Enable MCE Remote
- under IR Commands I added the codes for my TV
- under Multi-Mapping I added another remote for my TV and mapped the key to it
and that's it.
Very important: delete the reg keys as mentioned in http://forum.team-mediaportal.com/214180-post366.html