Redmine

I upgraded from 1.3 to 2.1.2.stable running on Ruby 1.8.7 (x86_64-linux) and Rails version 3.2.8. Now that I try to view the diff, I get an error 500. I added the following lines to additional_environment.rb:

config.log = Logger.new('/var/www/vhosts/redmine/log/debug.log', 2, 1000000)
config.log_level = :debug

But I don't see any lines being recorded. More importantly, I can't see to get the darn Subversion to work anymore. I used to run the following cron with 1.3 that would update the diffs, but runner is no longer there, so I'm not really sure how it is done now.

*/10 * * * * /usr/bin/ruby /var/www/vhosts/redmine/script/runner "Repository.fetch_changesets" -e production > /dev/null 2>&1 &

Any suggestions?