diff --git a/Gemfile b/Gemfile
index 43a7aac..89c16d4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -43,7 +43,7 @@ gem 'redcarpet'
 gem 'to_spreadsheet', git: 'https://github.com/glebm/to_spreadsheet.git'
 
 group :development do
-  gem 'better_errors'
+  gem 'better_errors', '2.2.0'
   gem 'binding_of_caller'
   gem 'meta_request'
   
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index f352be1..c0f4b18 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -423,7 +423,7 @@ class ApplicationController < BaseController
         day_diff += 7 if day_diff < 0
         day = (conference.start_date + day_diff.days).to_date
 
-        if @schedule[day].present? && @schedule[day][:times].present? && @schedule[day][:times][block['time'].to_f].present?
+        if block.present? && @schedule[day].present? && @schedule[day][:times].present? && @schedule[day][:times][block['time'].to_f].present?
           @schedule[day][:times][block['time'].to_f][:item][:workshops][workshop.event_location_id] = { workshop: workshop, status: { errors: [], warnings: [], conflict_score: nil } }
           @schedule[day][:locations][workshop.event_location_id] ||= workshop.event_location if workshop.event_location.present?
         end
diff --git a/app/controllers/conference_administration_controller.rb b/app/controllers/conference_administration_controller.rb
index 741b2ca..e0a6666 100644
--- a/app/controllers/conference_administration_controller.rb
+++ b/app/controllers/conference_administration_controller.rb
@@ -491,12 +491,12 @@ class ConferenceAdministrationController < ApplicationController
     end
 
     def administrate_locations
-      @locations = EventLocation.where(:conference_id => @this_conference.id)
+      @locations = EventLocation.where(conference_id: @this_conference.id)
     end
 
     def administrate_events
       @event = Event.new(locale: I18n.locale)
-      @events = Event.where(:conference_id => @this_conference.id)
+      @events = Event.where(conference_id: @this_conference.id)
       @day = nil
       @time = nil
       @length = 1.5
@@ -1409,6 +1409,7 @@ class ConferenceAdministrationController < ApplicationController
       when 'delete'
         location = EventLocation.find_by! id: params[:id].to_i, conference_id: @this_conference.id
         location.destroy
+        @this_conference.validate_workshop_blocks
       when 'create'
         empty_param = get_empty(params, [:title, :address, :space])
         if empty_param.present?
@@ -1506,11 +1507,13 @@ class ConferenceAdministrationController < ApplicationController
           @this_conference.save
           set_success_message :block_saved
         end
+        @this_conference.validate_workshop_blocks
         return false
       when 'delete_block'
         @this_conference.workshop_blocks ||= []
         @this_conference.workshop_blocks.delete_at(params[:workshop_block].to_i)
         @this_conference.save
+        @this_conference.validate_workshop_blocks
         set_success_message :block_deleted
         return false
       end
diff --git a/app/controllers/conferences_controller.rb b/app/controllers/conferences_controller.rb
index fc04a8d..d7029b3 100644
--- a/app/controllers/conferences_controller.rb
+++ b/app/controllers/conferences_controller.rb
@@ -109,6 +109,13 @@ class ConferencesController < ApplicationController
     end
   end
 
+  def survey
+    return do_404
+    # set_conference
+    # do_403 unless @this_conference.is_public || @this_conference.host?(current_user)
+    # do_403 if @this_conference.registration_open
+  end
+
   helper_method :registration_complete?
 
   def registration_steps(conference = nil)
diff --git a/app/views/conferences/register.html.haml b/app/views/conferences/register.html.haml
index 5f0f11a..5ac336d 100644
--- a/app/views/conferences/register.html.haml
+++ b/app/views/conferences/register.html.haml
@@ -1,4 +1,4 @@
-= render :partial => 'conferences/page_header', :locals => {:page_key => 'Conference_Registration'}
+= render partial: 'conferences/page_header', locals: {page_key: 'Conference_Registration'}
 - if @warnings.present?
   = row class: 'warnings', tag: :ul do
     - @warnings.each do |warning|
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 89eb1ce..e260243 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1298,6 +1298,7 @@ en:
   success:
     messages:
       admin:
+        block_deleted: Workshop block successfully removed
         block_saved: Workshop block saved successfully
         administrators: Organizations updated
         dates: Conference dates updated successfully
diff --git a/config/routes.rb b/config/routes.rb
index 71da3d6..9d8e78b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -32,6 +32,11 @@ BikeBike::Application.routes.draw do
         get 'check_in/:id' => 'conference_administration#check_in', as: :check_in, constraints: { id: /.+/ }
       end
 
+      scope :survey do
+        root 'conferences#survey', as: :conference_survey
+        post 'save' => 'conferences#save_survey', as: :conference_survey_save
+      end
+
       # Workshops
       scope :workshops do
         root 'workshops#workshops', as: :workshops
diff --git a/db/schema.rb b/db/schema.rb
index 1f6fe54..edf5f7f 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20170719024801) do
+ActiveRecord::Schema.define(version: 20170817000540) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -110,6 +110,7 @@ ActiveRecord::Schema.define(version: 20170719024801) do
     t.boolean  "is_participant"
     t.boolean  "is_volunteer"
     t.string   "confirmation_token"
+    t.binary   "data_old"
     t.string   "email"
     t.boolean  "complete"
     t.boolean  "completed"
@@ -131,6 +132,7 @@ ActiveRecord::Schema.define(version: 20170719024801) do
     t.json     "housing_data"
     t.integer  "city_id"
     t.json     "data"
+    t.boolean  "survey_taken"
   end
 
   create_table "conference_types", force: :cascade do |t|
@@ -391,6 +393,14 @@ ActiveRecord::Schema.define(version: 20170719024801) do
   add_index "sessions", ["session_id"], name: "index_sessions_on_session_id", unique: true, using: :btree
   add_index "sessions", ["updated_at"], name: "index_sessions_on_updated_at", using: :btree
 
+  create_table "surveys", force: :cascade do |t|
+    t.string   "name"
+    t.string   "version"
+    t.json     "results"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+  end
+
   create_table "translation_followers", force: :cascade do |t|
     t.string   "key"
     t.integer  "user_id"