added exceptions for .DS_Store and Thumbs.db in mirror_dir

googlemap.py

@@ -35,9 +35,17 @@ def mirror_dir(src, dst, entities=None):
     if not os.path.exists(dst):
         os.mkdir(dst)
     if entities and type(entities) != list: raise Exception("Expected a list, got a %r instead" % type(entities))
-
+    
+    # files which are problematic and should not be copied
+    # usually, generated by the OS
+    skip_files = ['Thumbs.db', '.DS_Store']
+    
     for entry in os.listdir(src):
-        if entities and entry not in entities: continue
+        if entry in skip_files:
+            continue
+        if entities and entry not in entities:
+            continue
+        
         if os.path.isdir(os.path.join(src,entry)):
             mirror_dir(os.path.join(src, entry), os.path.join(dst, entry))
         elif os.path.isfile(os.path.join(src,entry)):