diff --git a/src/sunstone/OpenNebulaVNC.rb b/src/sunstone/OpenNebulaVNC.rb
index 9ac0cd4b92..15ea9e292c 100644
--- a/src/sunstone/OpenNebulaVNC.rb
+++ b/src/sunstone/OpenNebulaVNC.rb
@@ -63,7 +63,7 @@ class OpenNebulaVNC
         end
 
         if @proxy_path == nil || @proxy_path.empty?
-            @logger.error "VNC proxy not configured"
+            @logger.error "VNC proxy not configured. Try #{SHARE_LOCATION}/install_novnc.sh"
             return false
         end
 
diff --git a/src/sunstone/bin/novnc-server b/src/sunstone/bin/novnc-server
index e203ff4bf6..20d2772a50 100755
--- a/src/sunstone/bin/novnc-server
+++ b/src/sunstone/bin/novnc-server
@@ -23,12 +23,14 @@ if !ONE_LOCATION
     LOG_LOCATION = "/var/log/one"
     LOCK_LOCATION = "/var/lock/one"
     VAR_LOCATION = "/var/lib/one"
+    SHARE_LOCATION = "/usr/share/one"
     ETC_LOCATION = "/etc/one"
     RUBY_LIB_LOCATION = "/usr/lib/one/ruby"
 else
     VAR_LOCATION = ONE_LOCATION + "/var"
     LOCK_LOCATION = ONE_LOCATION + "/var"
     LOG_LOCATION = ONE_LOCATION + "/var"
+    SHARE_LOCATION = ONE_LOCATION + "/share"
     ETC_LOCATION = ONE_LOCATION + "/etc"
     RUBY_LIB_LOCATION = ONE_LOCATION+"/lib/ruby"
 end
diff --git a/src/sunstone/etc/sunstone-server.conf b/src/sunstone/etc/sunstone-server.conf
index 0104ff5e17..de5da49729 100644
--- a/src/sunstone/etc/sunstone-server.conf
+++ b/src/sunstone/etc/sunstone-server.conf
@@ -34,6 +34,9 @@
 # Place where to store sessions, this value can be memory or memcache
 # Use memcache when starting multiple server processes, for example,
 # with passenger
+#
+# NOTE. memcache needs a separate memcached server to be configured. Refer
+# to memcached documentation to configure the server.
 :sessions: memory
 
 # Memcache configuration
diff --git a/src/sunstone/sunstone-server.rb b/src/sunstone/sunstone-server.rb
index 35eac27f14..ac64ad5f49 100755
--- a/src/sunstone/sunstone-server.rb
+++ b/src/sunstone/sunstone-server.rb
@@ -81,7 +81,7 @@ set :bind, settings.config[:host]
 set :port, settings.config[:port]
 
 case settings.config[:sessions]
-when 'memory'
+when 'memory', nil
     use Rack::Session::Pool, :key => 'sunstone'
 when 'memcache'
     memcache_server=settings.config[:memcache_host]+':'<<
@@ -92,7 +92,6 @@ when 'memcache'
     use Rack::Session::Memcache,
         :memcache_server => memcache_server,
         :namespace => settings.config[:memcache_namespace]
-
 else
     STDERR.puts "Wrong value for :sessions in configuration file"
     exit(-1)