media portal no fast forwards or rewind?

hi all
Installed the latest vix image 5.0 works lovely (thanks to devs) however is it just me doing something wrong ? where before you could skip through films using the 3/6/9 buttons on the remote now you can do it ONCE? have tried all sorts of configs even went back to earlier builds of the plugin still the same you cant fast forward /rewind through the movie you are watching anybody any ideas where I'm going wrong ?
cheers rab