<p>Hi Doug,</p><p>First of all the Nightly Builds are never guaranteed to work, so we don't recommend you upgrade shortly before a service, and it is a good idea to keep a working version! But I'm probably telling you something you already now know!</p><p>I can't see anything that has changed that might have caused your problem, but I don't know which version you had before. This might be a daft question, but are you absolutely sure OpenLP isn't already running? Could you try rebooting and trying again?</p><p>If you still have problems, please could you send a debug log to support ( at ) openlp.org. Thanks.</p>