diff --git a/parl/remote/job.py b/parl/remote/job.py
index e5c6965268eb65c8e40b205f2590213d92e88670..17a280fb4e2cad7e87a01f18c26bc680198b09fb 100644
--- a/parl/remote/job.py
+++ b/parl/remote/job.py
@@ -269,13 +269,15 @@ class Job(object):
                 # create directory (i.e. ./rom_files/)
                 if '/' in file:
                     try:
-                        os.makedirs(os.path.join(*file.rsplit('/')[:-1]))
+                        sep = os.sep
+                        recursive_dirs = os.path.join(*(file.split(sep)[:-1]))
+                        recursive_dirs = os.path.join(envdir, recursive_dirs)
+                        os.makedirs(recursive_dirs)
                     except OSError as e:
                         pass
                 file = os.path.join(envdir, file)
                 with open(file, 'wb') as f:
                     f.write(content)
-            logger.info('[job] reply')
             reply_socket.send_multipart([remote_constants.NORMAL_TAG])
             return envdir
         else:
@@ -358,7 +360,7 @@ class Job(object):
             self.single_task(obj, reply_socket, job_address)
         except Exception as e:
             logger.error(
-                "Error occurs when running a single task. We will reset this job. Reason:{}"
+                "Error occurs when running a single task. We will reset this job. \nReason:{}"
                 .format(e))
             traceback_str = str(traceback.format_exc())
             logger.error("traceback:\n{}".format(traceback_str))
diff --git a/parl/remote/tests/recursive_actor_test.py b/parl/remote/tests/recursive_actor_test.py
index 2d0665c04f84af62eee59f2530ba331a30d45f5d..5e9613b6be23ae64bf2fba10df793cfa57dbeea1 100644
--- a/parl/remote/tests/recursive_actor_test.py
+++ b/parl/remote/tests/recursive_actor_test.py
@@ -22,10 +22,11 @@ import threading
 
 c = 10
 port = 3002
-master = Master(port=port)
-th = threading.Thread(target=master.run)
-th.setDaemon(True)
-th.start()
+if __name__ == '__main__':
+    master = Master(port=port)
+    th = threading.Thread(target=master.run)
+    th.setDaemon(True)
+    th.start()
 time.sleep(5)
 cluster_addr = 'localhost:{}'.format(port)
 parl.connect(cluster_addr)
diff --git a/parl/remote/tests/sync_config_file_test.py b/parl/remote/tests/sync_config_file_test.py
index a4d131d5e13111a1c7faaa209aa2acb114e7c7c7..c8be19443e446e1d90819a63c2a64b471fb23e6d 100644
--- a/parl/remote/tests/sync_config_file_test.py
+++ b/parl/remote/tests/sync_config_file_test.py
@@ -17,12 +17,10 @@ import parl
 from parl.remote.master import Master
 from parl.remote.worker import Worker
 from parl.remote.client import disconnect
-
+import os
 import time
 import threading
-
 import sys
-
 import numpy as np
 import json
 
@@ -65,7 +63,8 @@ class TestConfigfile(unittest.TestCase):
         parl.connect('localhost:1335', ['random.npy', 'config.json'])
         actor = Actor('random.npy', 'config.json')
         time.sleep(5)
-
+        os.remove('./random.npy')
+        os.remove('./config.json')
         remote_sum = actor.random_sum()
         self.assertEqual(remote_sum, random_sum)
         time.sleep(10)