diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7c89d646..5013143b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -60,6 +60,7 @@ jobs:
       - run:
           command: mix firmware
           environment:
+            MIX_ENV: dev
             MIX_TARGET: rpi3
       - save_cache:
           key: v3-dependency-cache-{{ checksum "mix.lock.rpi3" }}
@@ -69,8 +70,9 @@ jobs:
             - ~/.mix
             - ~/.nerves
       - run:
-          command: mix firmware.slack -channels C58DCU4A3
+          command: mix firmware.slack --channels C58DCU4A3
           environment:
+            MIX_ENV: dev
             MIX_TARGET: rpi3
 
 workflows:
diff --git a/.tool-versions b/.tool-versions
index 6489cf3a..847190c9 100644
--- a/.tool-versions
+++ b/.tool-versions
@@ -1,2 +1,2 @@
-erlang 20.0
+erlang 20.1
 elixir 1.5.2
diff --git a/lib/farmbot/bootstrap/auth_task.ex b/lib/farmbot/bootstrap/auth_task.ex
index 04b55d2a..f221c72b 100644
--- a/lib/farmbot/bootstrap/auth_task.ex
+++ b/lib/farmbot/bootstrap/auth_task.ex
@@ -6,8 +6,8 @@ defmodule Farmbot.Bootstrap.AuthTask do
   import ConfigStorage, only: [update_config_value: 4, get_config_value: 3]
 
   # 30 minutes.
-  # @refresh_time 1.8e+6 |> round()
-  @refresh_time 5_000
+  @refresh_time 1.8e+6 |> round()
+  # @refresh_time 5_000
 
   @doc false
   def start_link() do
diff --git a/lib/farmbot/bot_state/transport/amqp/amqp.ex b/lib/farmbot/bot_state/transport/amqp/amqp.ex
index d691ab15..c914184b 100644
--- a/lib/farmbot/bot_state/transport/amqp/amqp.ex
+++ b/lib/farmbot/bot_state/transport/amqp/amqp.ex
@@ -188,10 +188,18 @@ defmodule Farmbot.BotState.Transport.AMQP do
     end
   end
 
+  def handle_info({:DOWN, _, :process, pid, reason}, state) do
+    Logger.warn 3, "Sequence: #{inspect pid} died: #{inspect reason}"
+    {:noreply, [], state}
+  end
+
   @doc false
   def handle_celery_script(payload, _state) do
     case AST.decode(payload) do
-      {:ok, ast} -> spawn CeleryScript, :execute, [ast]
+      {:ok, ast} ->
+        pid = spawn(CeleryScript, :execute, [ast])
+        Logger.busy 3, "Sequence starting: #{inspect pid}"
+        Process.monitor(pid)
       _ -> :ok
     end
   end
diff --git a/lib/farmbot/firmware/firmware.ex b/lib/farmbot/firmware/firmware.ex
index 616e9d27..fc91a406 100644
--- a/lib/farmbot/firmware/firmware.ex
+++ b/lib/farmbot/firmware/firmware.ex
@@ -7,32 +7,32 @@ defmodule Farmbot.Firmware do
 
   @doc "Move the bot to a position."
   def move_absolute(%Vec3{} = vec3, x_speed, y_speed, z_speed) do
-    GenStage.call(__MODULE__, {:move_absolute, [vec3, x_speed, y_speed, z_speed]}, :infinity)
+    GenStage.call(__MODULE__, {:move_absolute, [vec3, x_speed, y_speed, z_speed]}, 120_000)
   end
 
   @doc "Calibrate an axis."
   def calibrate(axis) do
-    GenStage.call(__MODULE__, {:calibrate, [axis]}, :infinity)
+    GenStage.call(__MODULE__, {:calibrate, [axis]}, 120_000)
   end
 
   @doc "Find home on an axis."
   def find_home(axis) do
-    GenStage.call(__MODULE__, {:find_home, [axis]}, :infinity)
+    GenStage.call(__MODULE__, {:find_home, [axis]}, 120_000)
   end
 
   @doc "Home every axis."
   def home_all() do
-    GenStage.call(__MODULE__, {:home_all, []}, :infinity)
+    GenStage.call(__MODULE__, {:home_all, []}, 120_000)
   end
 
   @doc "Home an axis."
   def home(axis) do
-    GenStage.call(__MODULE__, {:home, [axis]}, :infinity)
+    GenStage.call(__MODULE__, {:home, [axis]}, 120_000)
   end
 
   @doc "Manually set an axis's current position to zero."
   def zero(axis) do
-    GenStage.call(__MODULE__, {:zero, [axis]}, :infinity)
+    GenStage.call(__MODULE__, {:zero, [axis]}, 120_000)
   end
 
   @doc """
@@ -40,12 +40,12 @@ defmodule Farmbot.Firmware do
   For a list of paramaters see `Farmbot.Firmware.Gcode.Param`
   """
   def update_param(param, val) do
-    GenStage.call(__MODULE__, {:update_param, [param, val]}, :infinity)
+    GenStage.call(__MODULE__, {:update_param, [param, val]}, 120_000)
   end
 
   @doc false
   def read_all_params do
-    GenStage.call(__MODULE__, {:read_all_params, []}, :infinity)
+    GenStage.call(__MODULE__, {:read_all_params, []}, 120_000)
   end
 
   @doc """
@@ -53,42 +53,42 @@ defmodule Farmbot.Firmware do
   For a list of paramaters see `Farmbot.Firmware.Gcode.Param`
   """
   def read_param(param) do
-    GenStage.call(__MODULE__, {:read_param, [param]}, :infinity)
+    GenStage.call(__MODULE__, {:read_param, [param]}, 120_000)
   end
 
   @doc "Emergency lock Farmbot."
   def emergency_lock() do
-    GenStage.call(__MODULE__, {:emergency_lock, []}, :infinity)
+    GenStage.call(__MODULE__, {:emergency_lock, []}, 120_000)
   end
 
   @doc "Unlock Farmbot from Emergency state."
   def emergency_unlock() do
-    GenStage.call(__MODULE__, {:emergency_unlock, []}, :infinity)
+    GenStage.call(__MODULE__, {:emergency_unlock, []}, 120_000)
   end
 
   @doc "Set a pin mode (:input | :output)"
   def set_pin_mode(pin, mode) do
-    GenStage.call(__MODULE__, {:set_pin_mode, [pin, mode]}, :infinity)
+    GenStage.call(__MODULE__, {:set_pin_mode, [pin, mode]}, 120_000)
   end
 
   @doc "Read a pin."
   def read_pin(pin, mode) do
-    GenStage.call(__MODULE__, {:read_pin, [pin, mode]}, :infinity)
+    GenStage.call(__MODULE__, {:read_pin, [pin, mode]}, 120_000)
   end
 
   @doc "Write a pin."
   def write_pin(pin, mode, value) do
-    GenStage.call(__MODULE__, {:write_pin, [pin, mode, value]}, :infinity)
+    GenStage.call(__MODULE__, {:write_pin, [pin, mode, value]}, 120_000)
   end
 
   @doc "Request version."
   def request_software_version do
-    GenStage.call(__MODULE__, {:request_software_version, []}, :infinity)
+    GenStage.call(__MODULE__, {:request_software_version, []}, 120_000)
   end
 
   @doc "Set angle of a servo pin."
   def set_servo_angle(pin, value) do
-    GenStage.call(__MODULE__, {:set_servo_angle, [pin, value]}, :infinity)
+    GenStage.call(__MODULE__, {:set_servo_angle, [pin, value]}, 120_000)
   end
 
   @doc "Start the firmware services."
@@ -152,19 +152,18 @@ defmodule Farmbot.Firmware do
   def handle_info(:timeout, state) do
     case state.current do
       nil -> {:noreply, [], %{state | timer: nil}}
-      %Current{fun: fun, args: args, from: from} = current ->
+      %Current{fun: fun, args: args, from: _from} = current ->
         Logger.warn 1, "Got Firmware timeout. Retrying #{fun}(#{inspect args}) "
         case apply(state.handler_mod, fun, [state.handler | args]) do
           :ok ->
             timer = Process.send_after(self(), :timeout, state.timeout_ms)
             {:noreply, [], %{state | current: current, timer: timer}}
           {:error, _} = res ->
-            GenStage.reply(from, res)
+            do_reply(state, res)
             {:noreply, [], %{state | current: nil, queue: :queue.new()}}
         end
         {:noreply, [], %{state | timer: nil}}
     end
-
   end
 
   def handle_call({fun, _}, _from, state = %{initialized: false}) when fun not in  [:read_all_params, :update_param, :emergency_unlock, :emergency_lock] do
@@ -172,16 +171,17 @@ defmodule Farmbot.Firmware do
   end
 
   def handle_call({fun, args}, from, state) do
-    current = struct(Current, from: from, fun: fun, args: args)
-    if :queue.is_empty(state.queue) do
-      do_begin_cmd(current, state, [])
+    next_current = struct(Current, from: from, fun: fun, args: args)
+    current_current = state.current
+    if current_current do
+      do_queue_cmd(next_current, state)
     else
-      do_queue_cmd(current, state)
+      do_begin_cmd(next_current, state, [])
     end
   end
 
-  defp do_begin_cmd(%Current{fun: fun, args: args, from: _from} = current, state, dispatch) do
-    # Logger.debug 3, "Firmware command: #{fun}#{inspect(args)}"
+  defp do_begin_cmd(%Current{fun: fun, args: args, from: from} = current, state, dispatch) do
+    Logger.busy 3, "FW Starting: #{fun}: #{inspect from}"
 
     case apply(state.handler_mod, fun, [state.handler | args]) do
       :ok ->
@@ -189,22 +189,26 @@ defmodule Farmbot.Firmware do
         timer = Process.send_after(self(), :timeout, state.timeout_ms)
         {:noreply, dispatch, %{state | current: current, timer: timer}}
       {:error, _} = res ->
-        {:reply, res, dispatch, %{state | current: nil, queue: :queue.new()}}
+        do_reply(%{state | current: current}, res)
+        {:noreply, dispatch, %{state | current: nil}}
     end
   end
 
-  defp do_queue_cmd(%Current{fun: _fun, args: _args, from: _from} = current, state) do
+  defp do_queue_cmd(%Current{fun: fun, args: _args, from: from} = current, state) do
+    Logger.busy 3, "FW Queuing: #{fun}: #{inspect from}"
     new_q = :queue.in(current, state.queue)
     {:noreply, [], %{state | queue: new_q}}
   end
 
   def handle_events(gcodes, _from, state) do
     {diffs, state} = handle_gcodes(gcodes, state)
-    if state.current == nil do
+    # if after handling the current buffer of gcodes,
+    # Try to start the next command in the queue if it exists.
+    if List.last(gcodes) == :idle && state.current == nil do
       case :queue.out(state.queue) do
-        {{:value, current}, new_queue} ->
-          do_begin_cmd(current, %{state | queue: new_queue, current: current}, diffs)
-        {:empty, queue} ->
+        {{:value, next_current}, new_queue} ->
+          do_begin_cmd(next_current, %{state | queue: new_queue, current: next_current}, diffs)
+        {:empty, queue} -> # nothing to do if the queue is empty.
           {:noreply, diffs, %{state | queue: queue}}
       end
     else
@@ -242,7 +246,7 @@ defmodule Farmbot.Firmware do
         end
       end)
       Logger.error 1, "Failed to execute #{state.current.fun} #{inspect formatted_args}"
-      GenStage.reply(state.current.from, {:error, :firmware_error})
+      do_reply(state, {:error, :firmware_error})
       {nil, %{state | current: nil}}
     else
       {nil, state}
@@ -322,13 +326,13 @@ defmodule Farmbot.Firmware do
     Farmbot.BotState.set_busy(false)
     if state.current do
       # This might be a bug in the FW
-      if state.current.command in [:home, :home_all] do
+      if state.current.fun in [:home, :home_all] do
         Logger.warn 1, "Got idle during home. Ignoring. This might be bad."
         timer = Process.send_after(self(), :timeout, state.timeout_ms)
         {nil, %{state | timer: timer}}
       else
         Logger.warn 1, "Got idle while executing a command."
-        GenStage.reply(state.current.from, {:error, :timeout})
+        do_reply(state, {:error, :timeout})
         {:informational_settings, %{busy: false, locked: false}, %{state | current: nil, idle: true}}
       end
     else
@@ -379,7 +383,7 @@ defmodule Farmbot.Firmware do
   defp handle_gcode(:done, state) do
     maybe_cancel_timer(state.timer)
     if state.current do
-      GenStage.reply(state.current.from, :ok)
+      do_reply(state, :ok)
       {nil, %{state | current: nil}}
     else
       {nil, state}
@@ -389,7 +393,7 @@ defmodule Farmbot.Firmware do
   defp handle_gcode(:report_emergency_lock, state) do
     Farmbot.System.GPIO.Leds.led_status_err
     if state.current do
-      GenStage.reply(state.current.from, {:error, :emergency_lock})
+      do_reply(state, {:error, :emergency_lock})
       {:informational_settings, %{locked: true}, %{state | current: nil}}
     else
       {:informational_settings, %{locked: true}, state}
@@ -471,4 +475,15 @@ defmodule Farmbot.Firmware do
         report_calibration_callback(tries - 1, param, val)
     end
   end
+
+  defp do_reply(state, reply) do
+    case state.current do
+      %Current{fun: fun, from: from} ->
+        Logger.success 3, "FW Replying: #{fun}: #{inspect from}"
+        :ok = GenServer.reply from, reply
+      nil ->
+        Logger.error 1, "FW Nothing to send reply: #{inspect reply} to!."
+        :error
+    end
+  end
 end
diff --git a/lib/farmbot/firmware/stub_handler.ex b/lib/farmbot/firmware/stub_handler.ex
index 62e1295c..770fe310 100644
--- a/lib/farmbot/firmware/stub_handler.ex
+++ b/lib/farmbot/firmware/stub_handler.ex
@@ -14,8 +14,8 @@ defmodule Farmbot.Firmware.StubHandler do
     GenStage.start_link(__MODULE__, [])
   end
 
-  def move_absolute(handler, pos, x_speed, y_speed, z_speed) do
-    GenStage.call(handler, {:move_absolute, pos, x_speed, y_speed, z_speed})
+  def move_absolute(handler, pos, x_spd, y_spd, z_spd) do
+    GenStage.call(handler, {:move_absolute, pos, x_spd, y_spd, z_spd}, 120_000)
   end
 
   def calibrate(handler, axis) do
@@ -116,6 +116,7 @@ defmodule Farmbot.Firmware.StubHandler do
   end
 
   def handle_call({:move_absolute, pos, _x_speed, _y_speed, _z_speed}, _from, state) do
+    Process.sleep(5000)
     response = build_resp [{:report_current_position, pos.x, pos.y, pos.z},
                        {:report_encoder_position_scaled, pos.x, pos.y, pos.z},
                        {:report_encoder_position_raw, pos.x, pos.y, pos.z}, :done]
diff --git a/lib/farmbot/repo/repo.ex b/lib/farmbot/repo/repo.ex
index 802217f6..d29ed6b9 100644
--- a/lib/farmbot/repo/repo.ex
+++ b/lib/farmbot/repo/repo.ex
@@ -88,7 +88,7 @@ defmodule Farmbot.Repo do
 
     # Copy configs
     [current, _] = repos
-    copy_configs(current)
+    :ok = copy_configs(current)
     {:ok, %{repos: repos, needs_hard_sync: needs_hard_sync, timer: start_timer()}}
   end
 
@@ -118,11 +118,11 @@ defmodule Farmbot.Repo do
   def handle_call(:flip, _, %{repos: [repo_a, repo_b], needs_hard_sync: true} = state) do
     maybe_cancel_timer(state.timer)
     destroy_all_sync_cmds()
-    Logger.busy(1, "Syncing.")
+    Logger.busy(1, "Syncing (hard sync)")
     BotState.set_sync_status(:syncing)
     do_sync_both(repo_a, repo_b)
     BotState.set_sync_status(:synced)
-    copy_configs(repo_b)
+    :ok = copy_configs(repo_b)
     flip_repos_in_cs()
     Logger.success(1, "Sync complete.")
     {:reply, :ok, %{state | repos: [repo_b, repo_a], needs_hard_sync: false, timer: start_timer()}}
@@ -140,7 +140,7 @@ defmodule Farmbot.Repo do
 
     flip_repos_in_cs()
     BotState.set_sync_status(:synced)
-    copy_configs(repo_b)
+    :ok = copy_configs(repo_b)
     destroy_all_sync_cmds()
     Logger.success(1, "Sync complete.")
     {:reply, repo_b, %{state | repos: [repo_b, repo_a], timer: start_timer()}}
@@ -187,11 +187,12 @@ defmodule Farmbot.Repo do
     repo.all(Peripheral)
     |> Enum.all?(fn %{mode: mode, pin: pin} ->
          mode = if mode == 0, do: :digital, else: :analog
-         # Logger.busy 3, "Reading peripheral (#{pin} - #{mode})"
+         Logger.busy 3, "Reading peripheral (#{pin} - #{mode})"
          Farmbot.Firmware.read_pin(pin, mode)
        end)
 
     Farmbot.FarmEvent.Manager.register_events repo.all(Farmbot.Repo.FarmEvent)
+    :ok
   end
 
   defp destroy_all_sync_cmds do