diff --git a/devops-client/lib/devops-client/handler/deploy.rb b/devops-client/lib/devops-client/handler/deploy.rb
index 6213bc2..f5c06ed 100644
--- a/devops-client/lib/devops-client/handler/deploy.rb
+++ b/devops-client/lib/devops-client/handler/deploy.rb
@@ -14,6 +14,8 @@ class Deploy < Handler
     if ARGV.size > 1
       self.options = @options_parser.deploy_options
       deploy_handler @options_parser.args
+    else
+      @options_parser.invalid_command
     end
   end
 
diff --git a/devops-service/db/mongo/models/project.rb b/devops-service/db/mongo/models/project.rb
index d6cc327..9f0f568 100644
--- a/devops-service/db/mongo/models/project.rb
+++ b/devops-service/db/mongo/models/project.rb
@@ -39,7 +39,7 @@ module Devops
 
       def initialize p={}
         self.id = p["name"]
-        #raise InvalidRecord.new "No deploy envirenments for project #{self.id}" if p["deploy_envs"].nil? or p["deploy_envs"].empty?
+        #raise InvalidRecord.new "No deploy environments for project #{self.id}" if p["deploy_envs"].nil? or p["deploy_envs"].empty?
         self.type = p["type"] || Devops::GenericType.name
         self.description = p["description"]
         self.archived = p["archived"] || false
@@ -73,34 +73,20 @@ module Devops
       def add_authorized_user user, env=nil
         return if user.nil?
         new_users = ( user.is_a?(Array) ? user : [ user ] )
-        if env.nil?
-          self.deploy_envs.each do |e|
-            return unless e.users.is_a?(Array)
-            e.add_users new_users
-            Devops::Db.connector.set_project_deploy_env_field(self.id, e.identifier, "users", e.users)
-          end
-        else
-          e = self.deploy_env(env)
-          return unless e.users.is_a?(Array)
+        environments = env.nil? ? self.deploy_envs : [ self.deploy_env(env) ]
+        environments .each do |e|
           e.add_users new_users
-          Devops::Db.connector.set_project_deploy_env_field(self.id, e.identifier, "users", e.users)
+          Devops::Db.connector.set_project_deploy_env_field(self.id, e.identifier, {users: e.users})
         end
       end
 
       def remove_authorized_user user, env=nil
         return if user.nil?
         users = ( user.is_a?(Array) ? user : [ user ] )
-        if env.nil?
-          self.deploy_envs.each do |e|
-            return unless e.users.is_a?(Array)
-            e.users = e.users - users
-            Devops::Db.connector.set_project_deploy_env_field(self.id, e.identifier, "users", e.users)
-          end
-        else
-          e = self.deploy_env(env)
-          return unless e.users.is_a?(Array)
+        environments = env.nil? ? self.deploy_envs : [ self.deploy_env(env) ]
+        environments.each do |e|
           e.users = e.users - users
-          Devops::Db.connector.set_project_deploy_env_field(self.id, e.identifier, "users", e.users)
+          Devops::Db.connector.set_project_deploy_env_field(self.id, e.identifier, {users: e.users})
         end
       end
 
@@ -211,7 +197,7 @@ module Devops
       end
 
       def self.create_roles_response roles
-        if roles.is_a?(String)
+        if !roles || roles.is_a?(String)
           roles
         else
           info = ""
diff --git a/devops-service/workers/stack_bootstrap_worker.rb b/devops-service/workers/stack_bootstrap_worker.rb
index c7298b0..6ad25d7 100644
--- a/devops-service/workers/stack_bootstrap_worker.rb
+++ b/devops-service/workers/stack_bootstrap_worker.rb
@@ -184,6 +184,7 @@ class StackBootstrapWorker < Worker
     stack_servers_with_priority = {}
     stack_servers_info.each do |priority, info_array|
       stack_servers_with_priority[priority] = info_array.map do |extended_info|
+        @out.puts "Instance '#{extended_info["id"]}' has been launched with stack."
         server_attrs = {
           'provider' => provider.name,
           'project' => project.id,