Tvheadend

Hi! New member here. Thought im gonna try out tvheadend for the first time.

Ive been searching the forums for this issue, but i cant seem to find a solution that works for me.

Im trying to install tvheadend, but at the end of the installation i always get the message " Failed to fetch http://apt.tvheadend.org/unstable/artifacts/33/sya6y2hz/tvheadend_4.3-1789~g6bfeca6~jessie_i386.deb Size mismatch".

Been following the steps on the download page. Any help would be appreciated :/

Regards

Tommy