Patrick, there is an issue where RSSOwl encounters the following errors; 
Uncaught Exception. db4o engine closed.
  • '/home/***/.rssowl2/.metadata/.plugins/org.rssowl.core/rssowl.db' is closed. close() was called or open() failed.

  • This happens when a comp unexpectedly shuts down , eg during a blackout. Any info on how to solve this?