diff --git a/synthesizer/hparams.py b/synthesizer/hparams.py
index 84cec9d..8bcdb63 100644
--- a/synthesizer/hparams.py
+++ b/synthesizer/hparams.py
@@ -22,7 +22,8 @@ class HParams(object):
     def loadJson(self, dict):
         print("\Loading the json with %s\n", dict)
         for k in dict.keys():
-            self.__dict__[k] = dict[k]
+            if k not in ["tts_schedule", "tts_finetune_layers"]: 
+                self.__dict__[k] = dict[k]
         return self
 
     def dumpJson(self, fp):
diff --git a/toolbox/__init__.py b/toolbox/__init__.py
index 30f2865..33590bc 100644
--- a/toolbox/__init__.py
+++ b/toolbox/__init__.py
@@ -451,7 +451,7 @@ class Toolbox:
             self.ui.log("set hifigan as vocoder")
             # search a config file
             model_config_fpaths = list(model_fpath.parent.rglob("*.json"))
-            if self.ui.current_extractor_fpath is None:
+            if self.vc_mode and self.ui.current_extractor_fpath is None:
                 return
             model_config_fpath = model_config_fpaths[0]
         else: