diff --git a/install.py b/install.py
index 1ad6f4d..20a4484 100755
--- a/install.py
+++ b/install.py
@@ -100,7 +100,7 @@ if os.path.exists('__init__.py'):
             local_settings += '\nLOCAL_APPS = ["%s"]\n' % name
             local_settings_changed = True
         else:
-            apps = re.compile('(LOCAL_APPS.*?)\]', re.DOTALL).findall(local_settings)[0]
+            apps = re.compile(r'(LOCAL_APPS.*?)\]', re.DOTALL).findall(local_settings)[0]
             if name not in apps:
                 new_apps = apps.strip() + ',\n"%s"\n' % name
                 local_settings = local_settings.replace(apps, new_apps)
diff --git a/management/commands/generate_clips.py b/management/commands/generate_clips.py
index 4c96377..1be54fa 100644
--- a/management/commands/generate_clips.py
+++ b/management/commands/generate_clips.py
@@ -14,7 +14,7 @@ from ...render import get_srt
 
 
 def resolve_roman(s):
-    extra = re.compile('^\d+(.*?)$').findall(s)
+    extra = re.compile(r'^\d+(.*?)$').findall(s)
     if extra:
         extra = extra[0].lower()
         new = {
@@ -88,9 +88,9 @@ class Command(BaseCommand):
                 clip['tags'] = i.data.get('tags', [])
                 clip['editingtags'] = i.data.get('editingtags', [])
                 name = os.path.basename(original_target)
-                seqid = re.sub("Hotel Aporia_(\d+)", "S\\1_", name)
-                seqid = re.sub("Night March_(\d+)", "S\\1_", seqid)
-                seqid = re.sub("_(\d+)H_(\d+)", "_S\\1\\2_", seqid)
+                seqid = re.sub(r"Hotel Aporia_(\d+)", "S\\1_", name)
+                seqid = re.sub(r"Night March_(\d+)", "S\\1_", seqid)
+                seqid = re.sub(r"_(\d+)H_(\d+)", "_S\\1\\2_", seqid)
                 seqid = seqid.split('_')[:2]
                 seqid = [b[1:] if b[0] in ('B', 'S') else '0' for b in seqid]
                 seqid[1] = resolve_roman(seqid[1])
diff --git a/player/player.py b/player/player.py
index 74938ef..28b41e0 100755
--- a/player/player.py
+++ b/player/player.py
@@ -426,8 +426,11 @@ def main():
         log_format = '%(asctime)s:%(levelname)s:%(name)s:%(message)s'
         logging.basicConfig(level=logging.DEBUG, format=log_format)
     if args.config:
-        with open(args.config) as fd:
-            CONFIG.update(json.load(fd))
+        if os.path.exists(args.config):
+            with open(args.config) as fd:
+                CONFIG.update(json.load(fd))
+        else:
+            logger.error("config file %s does not exist, skipping", args.config)
 
     base = os.path.dirname(os.path.abspath(__file__))
     #os.chdir(base)
diff --git a/render.py b/render.py
index 56fc94a..f97a60a 100644
--- a/render.py
+++ b/render.py
@@ -61,7 +61,7 @@ def write_if_new(path, data, mode=''):
         old = ""
     is_new = data != old
     if path.endswith(".kdenlive"):
-        is_new = re.sub('\{.{36}\}', '', data) != re.sub('\{.{36}\}', '', old)
+        is_new = re.sub(r'\{.{36}\}', '', data) != re.sub(r'\{.{36}\}', '', old)
     if is_new:
         with open(path, write_mode) as fd:
             fd.write(data)