--- doc/build/ubuntu16LTS_install.frag	2016/04/22 15:08:29	1.1
+++ doc/build/ubuntu16LTS_install.frag	2018/06/20 12:36:29	1.4
@@ -131,7 +131,7 @@ Add LON-CAPA ubuntu repository to your /
 </p>
 <pre>
 sudo apt-get install python-software-properties
-sudo apt-add-repository 'deb http://install.loncapa.org/ubuntu trusty main'
+sudo apt-add-repository 'deb http://install.loncapa.org/ubuntu xenial main'
 </pre>
 <h2>5. <a name="ilc">Installing LON-CAPA</a></h2>
 <h3>Import the LON-CAPA encryption key</h3>
@@ -147,12 +147,14 @@ sudo apt-get install loncapa-prerequisit
 </pre><p>
 This may take some minutes due to LON-CAPA's large number of dependencies.
 </p>
-<h3>Set MPM mode for Apache web server and enable use of cgi scripts</h3>
+<h3>Set MPM mode for Apache web server and enable use of cgi scripts and webDAV</h3>
 <p>Execute: </p>
 <pre>
 sudo a2dismod mpm_event
 sudo a2enmod mpm_prefork
 sudo a2enmod cgi
+sudo a2enmod dav
+sudo a2enmod dav_fs
 </pre> 
 <h3>Retrieve and execute LON-CAPA setup program</h3>
 <p>
@@ -248,7 +250,7 @@ To configure and install LON-CAPA, becom
 </p>
 <pre>
 sudo -i
-cd /root/loncapa-X.Y.Z     (X.Y.Z should correspond to a version number like '2.12.0')
+cd /root/loncapa-X.Y.Z     (X.Y.Z should correspond to a version number like '2.11.2')
 ./UPDATE
 </pre>
 <p>