Fixed post/file deletus

yadc/models.py

@@ -243,7 +243,10 @@ class Post(TimestampMixin, db.Model):
 
     def remove_image_files(self):
         for im in self.image_files.values():
-            os.remove(im)
+            try:
+                if im: os.remove(im)
+            except:
+                pass
 
     @property
     def image_files(self):