[Chrisb43]

I am having the same issue, just installed the Yatse app to try it out.

Solved my problems by going to Direct Paths as opposed to App based paths, now all the remote apps work.
Funny though Croneter the PKC creator suggested that Direct paths is always better but that I do a clean Kodi install as there were other issues in my Kodi logs and that it was not PKC.
If direct paths is always better then that infers App paths is not (have issues??) 

Being too lazy and having customized my Kodi build over the last three years to how I wanted it, I took the short cut and just changed to Direct paths.
Presto chango! remotes work!
May not be a PKC fault according to croneter but PKC does not play well with App paths and software remotes, except it seems 4Head.
According to my untrained eye, when I look at the Kodi logs for each of the 4 remotes used (Yatse, Kore, 4Head and Kodi Remote) using the same file from the same position in the Remote app, 
PLAY calls PKC and in 4Head it finds the path to the file in the other three it doesn't. 
Maybe the remote call from the 4Head App is structured different, but why would 4Head work and the others not and why would changing to direct path solve the issue immediately.
Maybe the issue lies with how PKC App path applies the Auto install/config.

Sweet I will try that now. Thanks!!!