I had the same problem as you. To fix it I went to the MP configuration's General --> Keys and Sounds and deleted the bindings that was conflicting with my control.hello 2 all
find a next trouble. In TV mode i make PgUp/PgDn as chanel +/-, but it work as standart MP keys (OSD up/dn). The assign was made in [All Layers.TV is running] section.
buttons [-] [+] i assign for all modes as volume control in section [All Layers.No Conditions]. In TV-mode they dont work, volume OSD invisible, change the master (windows) volume level. At this time keyboard +/- work ok.
Please say for best understanding, who first catch the keys - this plugin or standart MP system ? And if on my remote a half of keys have a standart keyboard codes, must i reassign it in MP [General.Keys and Sounds] or plugin config enough?