diff --git a/src/you_get/extractors/flickr.py b/src/you_get/extractors/flickr.py
index 2535dd1c..79fca4ff 100644
--- a/src/you_get/extractors/flickr.py
+++ b/src/you_get/extractors/flickr.py
@@ -73,7 +73,7 @@ def get_api_key(page):
     match = match1(page, pattern_inline_api_key)
     # this happens only when the url points to a gallery page
     # that contains no inline api_key(and never makes xhr api calls)
-    # in fact this might be a better approch for getting a temporary api key
+    # in fact this might be a better approach for getting a temporary api key
     # since there's no place for a user to add custom information that may
     # misguide the regex in the homepage
     if not match:
diff --git a/src/you_get/extractors/iwara.py b/src/you_get/extractors/iwara.py
index 67a41d41..37cd712a 100644
--- a/src/you_get/extractors/iwara.py
+++ b/src/you_get/extractors/iwara.py
@@ -27,6 +27,9 @@ def iwara_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
     api_url = video_url + '/api/video/' + video_hash
     content = get_content(api_url, headers=headers)
     data = json.loads(content)
+    if len(data)<1 :
+        print('Maybe is Private Video?'+'['+title+']')
+        return True;
     down_urls = 'https:' + data[0]['uri']
     type, ext, size = url_info(down_urls, headers=headers)
     print_info(site_info, title+data[0]['resolution'], type, size)
@@ -35,10 +38,8 @@ def iwara_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
         download_urls([down_urls], title, ext, size, output_dir, merge=merge, headers=headers)
 
 def download_playlist_by_url( url, **kwargs):
-    video_page = get_content(url)
-    # url_first=re.findall(r"(http[s]?://[^/]+)",url)
+    video_page = get_html(url)
     url_first=match1(url, r"(http[s]?://[^/]+)")
-    # print (url_first)
     videos = set(re.findall(r'<a href="(/videos/[^"]+)"', video_page))
     if(len(videos)>0):
         for video in videos:
diff --git a/src/you_get/extractors/mtv81.py b/src/you_get/extractors/mtv81.py
index b92f74bc..ef432159 100644
--- a/src/you_get/extractors/mtv81.py
+++ b/src/you_get/extractors/mtv81.py
@@ -28,7 +28,7 @@ def mtv81_download(url, output_dir='.', merge=True, info_only=False, **kwargs):
     #
     # rtmpdump  -r 'rtmpe://cp30865.edgefcs.net/ondemand/mtviestor/_!/intlod/MTVInternational/MBUS/GeoLocals/00JP/VIAMTVI/PYC/201304/7122HVAQ4/00JPVIAMTVIPYC7122HVAQ4_640x_360_1200_m30.mp4' -o "title.mp4" --swfVfy http://media.mtvnservices.com/player/prime/mediaplayerprime.1.10.8.swf
     #
-    # because rtmpdump is unstable,may try serveral times
+    # because rtmpdump is unstable,may try several times
     #
     if not info_only:
         # import pdb
diff --git a/src/you_get/extractors/qingting.py b/src/you_get/extractors/qingting.py
index 9859d4be..8dd1b14f 100644
--- a/src/you_get/extractors/qingting.py
+++ b/src/you_get/extractors/qingting.py
@@ -10,7 +10,7 @@ __all__ = ['qingting_download_by_url']
 
 class Qingting(VideoExtractor):
     # every resource is described by its channel id and program id
-    # so vid is tuple (chaanel_id, program_id)
+    # so vid is tuple (channel_id, program_id)
 
     name = 'Qingting'
     stream_types = [
diff --git a/src/you_get/extractors/youtube.py b/src/you_get/extractors/youtube.py
index 58614c5f..81b45ac5 100644
--- a/src/you_get/extractors/youtube.py
+++ b/src/you_get/extractors/youtube.py
@@ -77,10 +77,11 @@ class YouTube(VideoExtractor):
         # - https://www.youtube.com/yts/jsbin/player-vflRjqq_w/da_DK/base.js
         # - https://www.youtube.com/yts/jsbin/player_ias-vfl-jbnrr/da_DK/base.js
         # - https://www.youtube.com/s/player/0b643cd1/player_ias.vflset/sv_SE/base.js
+        # - https://www.youtube.com/s/player/50e823fc/player_ias.vflset/sv_SE/base.js
         def tr_js(code):
             code = re.sub(r'function', r'def', code)
             # add prefix '_sig_' to prevent namespace pollution
-            code = re.sub(r'(\W)([$\w][$\w])\(', r'\1_sig_\2(', code)
+            code = re.sub(r'(\W)([$\w][$\w][$\w]?)\(', r'\1_sig_\2(', code)
             code = re.sub(r'\$', '_dollar', code)
             code = re.sub(r'\{', r': ', code)
             code = re.sub(r'\}', r'\n', code)
diff --git a/src/you_get/version.py b/src/you_get/version.py
index dd603918..f7daa7f8 100644
--- a/src/you_get/version.py
+++ b/src/you_get/version.py
@@ -1,4 +1,4 @@
 #!/usr/bin/env python
 
 script_name = 'you-get'
-__version__ = '0.4.1536'
+__version__ = '0.4.1545'
diff --git a/tests/test.py b/tests/test.py
index 5a86ee8f..4a2a117c 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -40,11 +40,11 @@ class YouGetTests(unittest.TestCase):
     def test_acfun(self):
         acfun.download('https://www.acfun.cn/v/ac11701912', info_only=True)
 
-    def test_soundcloud(self):
+    #def test_soundcloud(self):
         ## single song
-        soundcloud.download(
-            'https://soundcloud.com/keiny-pham/impure-bird', info_only=True
-        )
+        #soundcloud.download(
+        #    'https://soundcloud.com/keiny-pham/impure-bird', info_only=True
+        #)
         ## playlist
         #soundcloud.download(
         #    'https://soundcloud.com/anthony-flieger/sets/cytus', info_only=True