PVR iptv Simple Client

Hi, I hope someone can help. I have Librelec 0.7.3 installed on a Minix X8H Plus which seems great, but for some reason when I go into PVR clients, they are all there showing as disabled (as you would expect), but oddly the PVR iptv Simple Client is greyed out, and when I try to enable it, I get a brief message saying PVR iptv Simple Client Install Failed. Could enyone help me find a way to instal this addon?
Thanks in advance. Chris.