Hi
as far as i know "Continuity counter errors" is an error in the MPEG stream.
I did remove those error by going about it like this.
first get proper cables, connectors, LTE shielded.. NEW ones!.(Iphone 5 LTE is evil, when LTE is in use).
Isolate what freq/MUX's you need for the channels you have/can receive, and only ask tvheadend to scan those, my antenna can see 2 towers.. one with good reception and one bad.. and tvheadend will use both if not unmarked for scaning(I think).
Check that the antenna is made for DVB-T(size/freq), not to big not to old!.
i have this antenna installed under my roof..
Silvercrest DVB-T Indoor Aerial:
http://www.lidl-service.com/cps/rde/SID-34956661-7560C70F/lsp/hs.xsl/product.html?id=6176089&rdeLocaleAttr=en&title=DVB-T%20Indoor%20Aerial
don't have the FM antenna up, only use the ring...
last.. don't have an access-point/wireless card transmitting nearby(3-5 feet) the antenna/connectors or tuner.
i have no errors now...
hopes this helps, maybe you don't have to do all the 'tricks' I had to..
EDIT: for those of you that use Raspberry Pi, remember that Raspberry Pi is NOT shielded AT ALL.. don't have it nearby a DVT-t/c connector/ or tuner.. at least it can have an bad effect on reception.