I get the error You have installed modules but have not selected an encryption module, please consult the default config file for info when I try to start my bot. How do I fix this?

You need to load the blowfish encryption module. Look for the line checkmodule blowfish in your config file – if it’s commented out (has a # in front if it), delete the # to uncomment it. If you can’t find the checkmodule blowfish line in the config file, you will need to add it yourself.