My video capture card is supported by ShowShifter, so why is my main TV window is blank?
Check your card is selected in the ‘Capture Settings’ page (screenshot). Do this by clicking on the spanner button on the ‘Television’ (screenshot) or ‘Video Files’ page, then click on the button labelled ‘Capture Driver’. If the TV window has gone blank after going to the music page, select a channel and it will come back.