If you have never started logging before, type /discoverylog on the first character with which you log in.
It should say in the console that logging is enabled, and this only needs done once. If it tells you logging
has been disabled/stopped, simply type the command again to enable.
Click the Browse button and navigate to your Discovery.log file in your My Documents directory.
Delete your Discovery.log before starting Rift again to ensure that future
uploads contain only new data.