xrdp crashes after login
Try this:
Stop xrdp with sudo service xrdp stop
Edit the xrdp start script: sudo nano /etc/xrdp/startwm.sh
In this file, replace the lines
test -x /etc/X11/Xsession && exec /etc/X11/Xsession
exec /bin/sh /etc/X11/Xsession
with startxfce4
(You can comment out lines by adding # at the start)
Restart xrdp with sudo service xrdp start
Select Xrdp as the session, and log in.