diff --git a/htdocs/index.html b/htdocs/index.html
index 3fabf73..fefefbc 100644
--- a/htdocs/index.html
+++ b/htdocs/index.html
@@ -127,6 +127,7 @@
                     <div class="nano-content">
                         <div id="openwebrx-client-log-title">OpenWebRX client log</div>
                         <div>Author contact: <a href="http://www.justjakob.de/" target="_blank">Jakob Ketterl, DD5JFK</a></div>
+                        <div>Support and information: <a href="https://groups.io/g/openwebrx" target="_blank">Groups.io Mailinglist</a></div>
                         <div id="openwebrx-debugdiv"></div>
                     </div>
                 </div>
diff --git a/owrx/__main__.py b/owrx/__main__.py
index d452e4a..948781f 100644
--- a/owrx/__main__.py
+++ b/owrx/__main__.py
@@ -1,6 +1,6 @@
 from http.server import HTTPServer
 from owrx.http import RequestHandler
-from owrx.config import PropertyManager
+from owrx.config import PropertyManager, Config
 from owrx.feature import FeatureDetector
 from owrx.sdr import SdrService
 from socketserver import ThreadingMixIn
@@ -8,10 +8,12 @@ from owrx.sdrhu import SdrHuUpdater
 from owrx.service import Services
 from owrx.websocket import WebSocketConnection
 from owrx.pskreporter import PskReporter
+from owrx.version import openwebrx_version
 
 import logging
 
 logging.basicConfig(level=logging.DEBUG, format="%(asctime)s - %(name)s - %(levelname)s - %(message)s")
+logger = logging.getLogger(__name__)
 
 
 class ThreadedHttpServer(ThreadingMixIn, HTTPServer):
@@ -26,19 +28,32 @@ OpenWebRX - Open Source SDR Web App for Everyone!  | for license see LICENSE fil
 _________________________________________________________________________________________________
 
 Author contact info:    Jakob Ketterl, DD5JFK <dd5jfk@darc.de>
+Documentation:          https://github.com/jketterl/openwebrx/wiki
+Support and info:       https://groups.io/g/openwebrx
 
     """
     )
 
+    logger.info("OpenWebRX version {0} starting up...".format(openwebrx_version))
+
     pm = PropertyManager.getSharedInstance().loadConfig()
 
+    configErrors = Config.validateConfig()
+    if configErrors:
+        logger.error(
+            "your configuration contains errors. please address the following errors:"
+        )
+        for e in configErrors:
+            logger.error(e)
+        return
+
     featureDetector = FeatureDetector()
     if not featureDetector.is_available("core"):
-        print(
+        logger.error(
             "you are missing required dependencies to run openwebrx. "
             "please check that the following core requirements are installed:"
         )
-        print(", ".join(featureDetector.get_requirements("core")))
+        logger.error(", ".join(featureDetector.get_requirements("core")))
         return
 
     # Get error messages about unknown / unavailable features as soon as possible
diff --git a/owrx/config.py b/owrx/config.py
index 09bbd8f..b027f48 100644
--- a/owrx/config.py
+++ b/owrx/config.py
@@ -1,5 +1,6 @@
 import importlib.util
 import logging
+import os
 
 logger = logging.getLogger(__name__)
 
@@ -147,3 +148,36 @@ class PropertyManager(object):
             except FileNotFoundError:
                 pass
         raise ConfigNotFoundException("no usable config found! please make sure you have a valid configuration file!")
+
+
+class ConfigError(object):
+    def __init__(self, key, message):
+        self.key = key
+        self.message = message
+
+    def __str__(self):
+        return "Configuration Error (key: {0}): {1}".format(self.key, self.message)
+
+
+class Config:
+    @staticmethod
+    def validateConfig():
+        pm = PropertyManager.getSharedInstance()
+        errors = [
+            Config.checkTempDirectory(pm)
+        ]
+
+        return [e for e in errors if e is not None]
+
+    @staticmethod
+    def checkTempDirectory(pm: PropertyManager):
+        key = "temporary_directory"
+        if not key in pm or pm[key] is None:
+            return ConfigError(key, "temporary directory is not set")
+        if not os.path.exists(pm[key]):
+            return ConfigError(key, "temporary directory doesn't exist")
+        if not os.path.isdir(pm[key]):
+            return ConfigError(key, "temporary directory path is not a directory")
+        if not os.access(pm[key], os.W_OK):
+            return ConfigError(key, "temporary directory is not writable")
+        return None
diff --git a/owrx/kiss.py b/owrx/kiss.py
index 374cc07..e24284f 100644
--- a/owrx/kiss.py
+++ b/owrx/kiss.py
@@ -40,8 +40,12 @@ IGLOGIN {callsign} {password}
 
             if pm["aprs_igate_beacon"]:
                 (lat, lon) = pm["receiver_gps"]
-                lat = "{0}^{1:.2f}{2}".format(int(lat), (lat - int(lat)) * 60, "N" if lat > 0 else "S")
-                lon = "{0}^{1:.2f}{2}".format(int(lon), (lon - int(lon)) * 60, "E" if lon > 0 else "W")
+                direction_ns = "N" if lat > 0 else "S"
+                direction_we = "E" if lon > 0 else "W"
+                lat = abs(lat)
+                lon = abs(lon)
+                lat = "{0:02d}^{1:05.2f}{2}".format(int(lat), (lat - int(lat)) * 60, direction_ns)
+                lon = "{0:03d}^{1:05.2f}{2}".format(int(lon), (lon - int(lon)) * 60, direction_we)
 
                 config += """
 PBEACON sendto=IG delay=0:30 every=60:00 symbol="igate" overlay=R lat={lat} long={lon} comment="OpenWebRX APRS gateway"