minor change

ee/core/logwatch.py

@@ -49,7 +49,7 @@ class LogWatcher(object):
         # assert (os.path.isdir(self.folder), "%s does not exists"
         #                                     % self.folder)
         for file in self.filelist:
-            assert (os.path.isfile(file), "%s does not exists" % file)
+            assert (os.path.isfile(file))
         assert callable(callback)
         self.update_files()
         # The first time we run the script we move all file markers at EOF.