Fixed parameter loading.

dstat_interface/params.py

@@ -61,6 +61,8 @@ def load_params(window, path):
         get_params(window)
     except InputError:  # Will be thrown because no experiment will be selected
         pass
+    except KeyError:  # Will be thrown because no experiment will be selected
+        pass
 
     with open(path, 'r') as f:
         params = yaml.load(f)