no free tuner is available to fulfil the request

I have just setup my IPTV on my firesticj using TV MOSAIC.

I sometimes get this message when clicking in to a show from the guide.

no free tuner is available to fulfil the request

And then the show does not come up.

Any ideas on how to fix it?

I have 2 m3u streams entered (with 2 connections each for a total of 4) and 2 epg xml urls entered.