Enable Debug mode in Sessions > Evidian > [Session Name] > Options in Setup and set the level of detail.
Kill the Evidian Authentication Manager process.
Start the desired Evidian session from the Start Menu.
Watch the output with tail -f /var/log/rsuserauth[Session Number].debug in Local Terminal. Alternatively, add the file to System Log Viewer.
Further Troubleshooting
Open Local Terminal
Enter ps fax | grep rsuserauth | grep -v grep to look for Evidian Authentication Manager processes.
Use the Evidian AuthMgr Restart session to restart all Evidian sessions if neccesary OR kill unwanted processes by entering kill [process ID] in the terminal, start desired processes via the Evidian entries in the Start Menu.