Index: config.py
==================================================================
--- config.py
+++ config.py
@@ -39,10 +39,11 @@
 
 
 from __future__ import print_function
 import os, glob
 import sys
+from traceback import format_exc
 import json
 import gzip
 import platform
 import re
 from compat2and3 import gzip_decode, find_executable, PY2, PY3
@@ -137,11 +138,11 @@
             "streamedit": 1,
             "configwin": 1,
         }
         self.tmp = os.environ.get("TEMP", "/tmp") + "/streamtuner2"
         self.nothreads = 0
-        self.max_streams = "500"
+        self.max_streams = 500
         self.internetradio_max_pages = 5
         self.show_bookmarks = 1
         self.show_favicons = 1
         self.load_favicon = 1
         self.heuristic_bookmark_update = 0
@@ -372,11 +373,16 @@
         if conf.windows:
             method = "[%s]" % method
         else:
             method = r"[{}[{}]".format(self.colors.get(method.split("_")[0], "47m"), method)
         # output
-        print(method + " " + " ".join([str(a) for a in args]), file=sys.stderr)
+        print(
+            method + " " + " " . join(
+                format_exc(a) if isinstance(a, Exception) else str(a) for a in args
+            ),
+            file=sys.stderr
+        )
 
     # Colors
     colors = {
         "ERR":  "31m",          # red    ERROR
         "INIT": "38;5;196m",    # red    INIT ERROR