diff --git a/synchronizers b/synchronizers
new file mode 120000
index 0000000..d587898
--- /dev/null
+++ b/synchronizers
@@ -0,0 +1 @@
+observers
\ No newline at end of file
diff --git a/xos/configurations/cord/README.md b/xos/configurations/cord/README.md
index 5683601..423f4d6 100644
--- a/xos/configurations/cord/README.md
+++ b/xos/configurations/cord/README.md
@@ -38,9 +38,20 @@
 
 ## How to run it
 
-The configuration is intended to be run on [CloudLab](http://cloudlab.us), on the *ctl* node set up by the OpenStack profile.
+The configuration is intended to be run on [CloudLab](http://cloudlab.us).
 It launches an XOS container on Cloudlab that runs the XOS develserver.  The container is left running in the background.
 
+To get started on CloudLab:
+* Create an experiment using the *OpenStack-CORD* profile.  (You can also use the *OpenStack* profile, but choose *Kilo*
+and disable security groups.)
+* Wait until you get an email from CloudLab with title "OpenStack Instance Finished Setting Up".
+* Login to the *ctl* node of your experiment and run:
+```
+$ git clone https://github.com/open-cloud/xos.git
+$ cd xos/xos/configurations/cord/
+$ make
+```
+
 Running `make` in this directory creates the XOS Docker container and runs the TOSCA engine with `cord.yaml` to
 configure XOS with the CORD services.  In addition, a number of VMs are created:
 
@@ -50,10 +61,6 @@
 1. *Slice mysite_volt*: for running OvS with the `olt` app as controller
 1. *Slice mysite_clients*: a subscriber client for end-to-end testing
 
-After the first VM is created (for running the `virtualbng` app) it is necessary to configure XOS's *service_vbng* with its URL.
-Log into XOS, click on *Services* tab at left, then *service_vbng* icon.  Change **Vbng url:** to point to the IP address on
-`flat-lan-1-net` of the VM (it will start with 10.11).
-
 Once all the VMs are up and the ONOS apps are configured, XOS should be able to get an address mapping from the `virtualbng`
 ONOS app when creating a vCPE.  To test this, enter the XOS Docker container and run:
 
diff --git a/xos/dmdot b/xos/dmdot
index 124c7cf..f438aad 100755
--- a/xos/dmdot
+++ b/xos/dmdot
@@ -22,7 +22,7 @@
     if arg.startswith("-"):
         output = arg
     else:
-        apps = [arg]
+        apps+= [arg]
 
 model_classes = []
 class_names = []
diff --git a/xos/helloworld/models.py b/xos/helloworld/models.py
index 37f6751..a657f3a 100644
--- a/xos/helloworld/models.py
+++ b/xos/helloworld/models.py
@@ -11,7 +11,7 @@
 
 class Hello(PlCoreBase):
     name = models.CharField(max_length=254,help_text="Salutation e.g. Hello or Bonjour")
-    sliver_backref = models.ForeignKey(Instance)
+    instance_backref = models.ForeignKey(Instance)
     
 class World(PlCoreBase):
     name = models.CharField(max_length=254,help_text="Name of planet")
diff --git a/xos/openstack_synchronizer b/xos/openstack_synchronizer
new file mode 120000
index 0000000..ae75af5
--- /dev/null
+++ b/xos/openstack_synchronizer
@@ -0,0 +1 @@
+openstack_observer
\ No newline at end of file