Solved KDE problem after fresh install

Sorry for another noobie question but I have been reading through this forum (and others) but haven't been able to solve my problem.

I broke my system beyond the point of being able to fix it so I did a complete re install including wiping out and reformatting the hard drive.

Then I ran freebsd-update. Everything went as expected. I am at:
FreeBSD bingo.home 11.0-RELEASE-p9 FreeBSD 11.0-RELEASE-p9 #0: Tue Apr 11 08:48:40 UTC 2017  amd64

Then installed xorg - all OK so far.

Installed KDE - when computer reboots, I get a blank screen with default KDE wallpaer but no icons or tray at the bottom. The only way out of it is to hit the reset or power button.

If I disable KDE I can start x and run programs from xterm.

my /etc/rc.conf is

# Set dumpdev to "AUTO" to enable crash dumps, "NO" to disable
# added by me for kde

/etc/fstab is:

# Device                Mountpoint      FStype  Options         Dump    Pass#
/dev/ada0p3             none    swap    sw              0       0
proc                    /proc   procfs  rw              0       0
What am I missing??
I'm a newbie and I have no idea if it makes a difference but you don't have a root partition listed.
dev/ada1s1a    /               ufs     rw      1       1
zorb847 disable KDM for the time being. Boot normally (without X active), login with a user account and run startx. Make sure that works first. You'll need to make sure that X is configured correctly before you can run anything on top of it.
This is exactly what I am doing.
I comment out enable_kdm4="YES" - then reboot - then log in with my regular username.
startx. I can open xterm and run any x program or anything KDE like kate or dolphin.
I am using the computer now with firefox 53 to write this message.
I don't get a login manager screen where you type in username and password.
I made a very stupid mistake and I am embarrassed to say what the problem was but I figured it out.
Thanks for replies and to anyone for looking at this thread!