From: Michal Fojtik <[email protected]>

Signed-off-by: Michal fojtik <[email protected]>
---
 server/config.ru |    4 ++++
 1 file changed, 4 insertions(+)

diff --git a/server/config.ru b/server/config.ru
index 6a28352..8ef20e5 100644
--- a/server/config.ru
+++ b/server/config.ru
@@ -54,6 +54,10 @@ end
 #       different root_url's
 #
 frontends.each do |frontend|
+  if Deltacloud[frontend.to_sym].nil?
+    puts "ERROR: Unknown frontend (#{frontend}). Valid values are 
'deltacloud,cimi,ec2'"
+    exit(1)
+  end
   Deltacloud[frontend.to_sym].require!
   routes.merge!({
     Deltacloud[frontend].root_url => Deltacloud[frontend].klass
-- 
1.7.10.2

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