Hi @FBCLABARGE
Sorry to hear about your troubles. Which version did you upgrade from? And just to be sure, which version are you trying to install?
You mention that you can't open older service files, but don't you have the songs etc available from inside openlp?
Regarding downloading older versions of openlp, you should go here: https://get.openlp.org/
For a guide for downgrading, look here: https://manual.openlp.org/troubleshooting.html#downgrade-guide-how-to-restore-a-backup
I've never seen the install issues you're mentioning, so unfortunately I can't help you there ????