Version 2.04 still not working!

After PC2 worked great for some time, one of the first updates caused my Copilot to always give an error massage when starting, containing "Cannot launch Java application" and then "Uncaught exception in main method" and something with JDBC Connection and causing it to break down. Since then, I cannot use the program at all, and unfortunately, the new update 2.04 does not change anything about that. Does anyone share this problem, and how can it be solved?