diff --git a/homeassistant/components/climate/zwave.py b/homeassistant/components/climate/zwave.py
index 545d3b41432..e74d5d575a3 100755
--- a/homeassistant/components/climate/zwave.py
+++ b/homeassistant/components/climate/zwave.py
@@ -97,9 +97,11 @@ class ZWaveClimate(ZWaveDeviceEntity, ClimateDevice):
         self._current_temperature = self.get_value(
             class_id=zwave.const.COMMAND_CLASS_SENSOR_MULTILEVEL,
             label=['Temperature'], member='data')
-        self._unit = self.get_value(
+        device_unit = self.get_value(
             class_id=zwave.const.COMMAND_CLASS_SENSOR_MULTILEVEL,
             label=['Temperature'], member='units')
+        if device_unit is not None:
+            self._unit = device_unit
 
         # Fan Mode
         self._current_fan_mode = self.get_value(
diff --git a/homeassistant/components/hdmi_cec.py b/homeassistant/components/hdmi_cec.py
index a154bdf609e..5ed3b688672 100644
--- a/homeassistant/components/hdmi_cec.py
+++ b/homeassistant/components/hdmi_cec.py
@@ -21,10 +21,11 @@ from homeassistant.config import load_yaml_config_file
 from homeassistant.const import (EVENT_HOMEASSISTANT_START, STATE_UNKNOWN,
                                  EVENT_HOMEASSISTANT_STOP, STATE_ON,
                                  STATE_OFF, CONF_DEVICES, CONF_PLATFORM,
-                                 CONF_CUSTOMIZE, STATE_PLAYING, STATE_IDLE,
+                                 STATE_PLAYING, STATE_IDLE,
                                  STATE_PAUSED, CONF_HOST)
 from homeassistant.core import HomeAssistant, callback
 from homeassistant.helpers.entity import Entity
+from homeassistant.helpers import customize
 
 REQUIREMENTS = ['pyCEC==0.4.13']
 
@@ -299,10 +300,12 @@ def setup(hass: HomeAssistant, base_config):
         """Called when new device is detected by HDMI network."""
         key = DOMAIN + '.' + device.name
         hass.data[key] = device
-        discovery.load_platform(hass, base_config.get(core.DOMAIN).get(
-            CONF_CUSTOMIZE, {}).get(key, {}).get(CONF_PLATFORM, platform),
-                                DOMAIN, discovered={ATTR_NEW: [key]},
-                                hass_config=base_config)
+        discovery.load_platform(
+            hass,
+            customize.get_overrides(hass, core.DOMAIN, key).get(
+                CONF_PLATFORM, platform),
+            DOMAIN, discovered={ATTR_NEW: [key]},
+            hass_config=base_config)
 
     def _shutdown(call):
         hdmi_network.stop()
diff --git a/homeassistant/components/lock/nuki.py b/homeassistant/components/lock/nuki.py
index b167c00b9bc..33058c86239 100644
--- a/homeassistant/components/lock/nuki.py
+++ b/homeassistant/components/lock/nuki.py
@@ -14,7 +14,7 @@ from homeassistant.util import Throttle
 import homeassistant.helpers.config_validation as cv
 
 
-REQUIREMENTS = ['pynuki==1.2']
+REQUIREMENTS = ['pynuki==1.2.1']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/components/mqtt/__init__.py b/homeassistant/components/mqtt/__init__.py
index e880be177e8..79c154ef223 100644
--- a/homeassistant/components/mqtt/__init__.py
+++ b/homeassistant/components/mqtt/__init__.py
@@ -237,7 +237,7 @@ def _setup_discovery(hass, config):
         _LOGGER.error("Unable to load MQTT discovery")
         return None
 
-    success = discovery.start(hass, conf[CONF_DISCOVERY_PREFIX], config)
+    success = discovery.async_start(hass, conf[CONF_DISCOVERY_PREFIX], config)
 
     return success
 
diff --git a/homeassistant/components/sensor/usps.py b/homeassistant/components/sensor/usps.py
index 680b4e4142d..5c2bb84daa1 100644
--- a/homeassistant/components/sensor/usps.py
+++ b/homeassistant/components/sensor/usps.py
@@ -19,7 +19,7 @@ from homeassistant.util import Throttle
 from homeassistant.util.dt import now, parse_datetime
 import homeassistant.helpers.config_validation as cv
 
-REQUIREMENTS = ['myusps==1.0.2']
+REQUIREMENTS = ['myusps==1.0.3']
 
 _LOGGER = logging.getLogger(__name__)
 
diff --git a/homeassistant/config.py b/homeassistant/config.py
index 101c1a1dc87..27b9d2956e8 100644
--- a/homeassistant/config.py
+++ b/homeassistant/config.py
@@ -466,10 +466,9 @@ def async_check_ha_config_file(hass):
     import homeassistant.components.persistent_notification as pn
 
     proc = yield from asyncio.create_subprocess_exec(
-        sys.argv[0],
-        '--script',
-        'check_config',
-        stdout=asyncio.subprocess.PIPE)
+        sys.executable, '-m', 'homeassistant', '--script',
+        'check_config', '--config', hass.config.config_dir,
+        stdout=asyncio.subprocess.PIPE, loop=hass.loop)
     # Wait for the subprocess exit
     (stdout_data, dummy) = yield from proc.communicate()
     result = yield from proc.wait()
diff --git a/homeassistant/const.py b/homeassistant/const.py
index 2cbaf395c39..44438fa92d4 100644
--- a/homeassistant/const.py
+++ b/homeassistant/const.py
@@ -2,7 +2,7 @@
 """Constants used by Home Assistant components."""
 MAJOR_VERSION = 0
 MINOR_VERSION = 38
-PATCH_VERSION = '1'
+PATCH_VERSION = '2'
 __short_version__ = '{}.{}'.format(MAJOR_VERSION, MINOR_VERSION)
 __version__ = '{}.{}'.format(__short_version__, PATCH_VERSION)
 REQUIRED_PYTHON_VER = (3, 4, 2)
diff --git a/requirements_all.txt b/requirements_all.txt
index 2303b7926c8..527e9a17f54 100755
--- a/requirements_all.txt
+++ b/requirements_all.txt
@@ -332,7 +332,7 @@ miflora==0.1.15
 mutagen==1.36.2
 
 # homeassistant.components.sensor.usps
-myusps==1.0.2
+myusps==1.0.3
 
 # homeassistant.components.discovery
 netdisco==0.8.2
@@ -487,7 +487,7 @@ pynetgear==0.3.3
 pynetio==0.1.6
 
 # homeassistant.components.lock.nuki
-pynuki==1.2
+pynuki==1.2.1
 
 # homeassistant.components.sensor.nut
 pynut2==2.1.2