Used to use Openlp at last church with great success. Since then have moved and also have a new laptop and it's a MacBook Air. Have downloaded most recent version of openlp. Appreciate that Openlp does not operate with Powerpoint, or Keynote, but understand there is a facility to view via Impress. Have downloaded Openoffice, saved a powerpoint as Impress file. But when I go to Preferences, Presentations, the option to for Available controllers is greyed out. How do I activate it?<br>The Help notes also suggest downloading Powerpoint viewer with a link to access Viewer 2007, but when that is clicked it says the download is no longer available. Is there no way round this problem of presentations?<br>ValRG