The beta version of 2020.0 has been released! Please give it a try and let us know if you spot any issues.
Hi, Please help
How do I fix a startup Error
Hey, this is an old thread that relates to the last beta. Which version are you having an issue with?
Regardless as to the version though, attaching the debug log (Locating the debug log | Quelea) is going to be necessary to help work out the issue.