Remove leading '//' from *NIX paths

Fixes #2506,  #2021

couchpotato/core/helpers/encoding.py

@@ -64,10 +64,13 @@ def sp(path, *args):
     if path != os.path.sep:
         path = path.rstrip(os.path.sep)
 
-    # Add a trailing separator in case it is a root folder on windows
+    # Add a trailing separator in case it is a root folder on windows (crashes guessit)
     if len(path) == 2 and path[1] == ':':
         path = path + os.path.sep
 
+    # Replace *NIX ambiguous '//' at the beginning of a path with '/' (crashes guessit)
+    path = re.sub('^//', '/', path)
+
     return path
 
 def ek(original, *args):