Login Screen (tdm) can't login - loops back to itself??

Tim, Darrell I did a fresh install of Arch and loaded TDE. I simply used systemd to launch tdm (e.g. systemctl enable tdm). Amazingly (and quite comforting) TDE fired up on first boot without issue. But..., and there is always a but.... When I attempt to login, I do ctrl+alt+del to get to the login prompt, I login, the screen turns black like it is starting to launch tde -- but then goes right back to the tdm [press ctrl+alt+del] screen. What gives? Is this tsak run amuck? Checking .xsession-errors, there is only 1 error: /opt/trinity/share/config/tdm/Xsession: line 62: exec: ck-launch-session: not found The line complained of is: case $session in "") exec xmessage -center -buttons OK:0 -default OK "Sorry, $DESKTOP_SESSION is no valid session." ;; failsafe) exec ck-launch-session xterm -geometry 80x24-0-0 ;; custom) exec ck-launch-session $HOME/.xsession ;; default) exec ck-launch-session /opt/trinity/bin/starttde ;; *) --> eval exec ck-launch-session "$session" ;; esac exec xmessage -center -buttons OK:0 -default OK "Sorry, cannot execute $session. Check $DESKTOP_SESSION.desktop." So apparently case is hitting its default '*' and attempting to execute: eval exec ck-launch-session "$session" and fails. The strange thing is that is doesn't execute the default) which would starttde which I have verified is in place. Further, I can't start any desktop from tdm. I installed fluxbox, and when I choose "Fluxbox" from the greeter, the same thing happens -- what to check/do? -- David C. Rankin, J.D.,P.E.