PieterBredenkamp
 
Has OpenLP ever functioned correctly on this computer?
This looks very similar to the issue seen by EricM earlier in this post.
Could you try running this command in a CMD window:
REG DELETE HKCU\Software\OpenLP
This will delete all your OpenLP settings and when you start OpenLP should take you through the initial First Time use process. You may then have to follow the steps from the first reply on this post.