diff --git a/resolv/resolvers/filebox.py b/resolv/resolvers/filebox.py
index 4400e5a..0fc14ed 100644
--- a/resolv/resolvers/filebox.py
+++ b/resolv/resolvers/filebox.py
@@ -1,5 +1,5 @@
 import re, time, urllib2
-from resolv.shared import ResolverError, Task
+from resolv.shared import ResolverError, TechnicalError, Task
 
 class FileboxTask(Task):
 	result_type = "video"
@@ -21,7 +21,7 @@ class FileboxTask(Task):
 			contents = self.fetch_page("http://www.filebox.com/embed-%s-970x543.html" % video_id)
 		except urllib2.URLError, e:
 			self.state = "failed"
-			raise ResolverError("Could not retrieve the video page.")
+			raise TechnicalError("Could not retrieve the video page.")
 		
 		matches = re.search("url: '([^']+)',", contents)
 		
diff --git a/resolv/resolvers/mediafire.py b/resolv/resolvers/mediafire.py
index bc5f405..a891ab1 100644
--- a/resolv/resolvers/mediafire.py
+++ b/resolv/resolvers/mediafire.py
@@ -1,5 +1,5 @@
 import re, urllib2
-from resolv.shared import ResolverError, unescape, Task
+from resolv.shared import ResolverError, TechnicalError, unescape, Task
 
 class MediafireTask(Task):
 	result_type = "file"
@@ -13,7 +13,7 @@ class MediafireTask(Task):
 			contents = self.fetch_page(self.url)
 		except urllib2.URLError, e:
 			self.state = "failed"
-			raise ResolverError("Could not retrieve the specified URL.")
+			raise TechnicalError("Could not retrieve the specified URL.")
 		
 		if '<form name="form_password"' in contents:
 			# The file is password-protected
@@ -45,7 +45,7 @@ class MediafireTask(Task):
 			file_title = unescape(re.search('<title>([^<]+)<\/title>', contents).group(1))
 		except:
 			self.state = "failed"
-			raise ResolverError("Could not find the download title.")
+			raise TechnicalError("Could not find the download title.")
 		
 		file_dict = {
 			'url'		: file_url,
diff --git a/resolv/resolvers/onechannel.py b/resolv/resolvers/onechannel.py
index ad9f5ad..164df22 100644
--- a/resolv/resolvers/onechannel.py
+++ b/resolv/resolvers/onechannel.py
@@ -1,5 +1,5 @@
 import re, base64
-from resolv.shared import ResolverError, Task
+from resolv.shared import ResolverError, TechnicalError, Task
 
 class OneChannelTask(Task):
 	result_type = "url"
@@ -19,7 +19,7 @@ class OneChannelTask(Task):
 			real_url = base64.b64decode(matches.group(2)).strip()
 		except TypeError:
 			self.state = "failed"
-			raise ResolverError("The provided URL is malformed.")
+			raise TechnicalError("The provided URL is malformed.")
 		
 		self.results = { 'url': real_url }
 		self.state = "finished"
diff --git a/resolv/resolvers/putlocker.py b/resolv/resolvers/putlocker.py
index 96e8058..8a66af4 100644
--- a/resolv/resolvers/putlocker.py
+++ b/resolv/resolvers/putlocker.py
@@ -1,5 +1,5 @@
 import re
-from resolv.shared import ResolverError, unescape, Task
+from resolv.shared import ResolverError, TechnicalError, unescape, Task
 
 class PutlockerTask(Task):
 	result_type = "video"
@@ -13,7 +13,7 @@ class PutlockerTask(Task):
 			import mechanize
 		except ImportError:
 			self.state = "failed"
-			raise ResolverError("The Python mechanize module is required to resolve PutLocker URLs.")
+			raise TechnicalError("The Python mechanize module is required to resolve PutLocker URLs.")
 		
 		matches = re.search("https?:\/\/(www\.)?putlocker\.com\/(file|embed)\/([A-Z0-9]+)", self.url)
 
@@ -29,7 +29,7 @@ class PutlockerTask(Task):
 			browser.open("http://putlocker.com/embed/%s" % video_id)
 		except:
 			self.state = "failed"
-			raise ResolverError("The PutLocker site could not be reached.")
+			raise TechnicalError("The PutLocker site could not be reached.")
 		
 		try:
 			browser.select_form(nr=0)
@@ -42,6 +42,7 @@ class PutlockerTask(Task):
 		matches = re.search("playlist: '([^']+)'", page)
 		
 		if matches is None:
+			self.state = "failed"
 			raise ResolverError("No playlist was found on the given URL; the PutLocker server for this file may be in maintenance mode, or the given URL may not be a video file. The PutLocker resolver currently only supports video links.")
 		
 		playlist = matches.group(1)
@@ -50,7 +51,7 @@ class PutlockerTask(Task):
 			browser.open("http://www.putlocker.com%s" % playlist)
 		except:
 			self.state = "failed"
-			raise ResolverError("The playlist file for the given URL could not be loaded.")
+			raise TechnicalError("The playlist file for the given URL could not be loaded.")
 		
 		matches = re.search("url=\"([^\"]+)\" type=\"video\/x-flv\"", browser.response().read())
 		
@@ -64,7 +65,7 @@ class PutlockerTask(Task):
 			video_title = unescape(re.search('<a href="\/file\/[^"]+"[^>]*><strong>([^<]*)<\/strong><\/a>', page).group(1))
 		except:
 			self.state = "failed"
-			raise ResolverError("Could not find the video title.")
+			raise TechnicalError("Could not find the video title.")
 		
 		stream_dict = {
 			'url'		: video_file,
diff --git a/resolv/resolvers/sockshare.py b/resolv/resolvers/sockshare.py
index 3e34866..6d9e080 100644
--- a/resolv/resolvers/sockshare.py
+++ b/resolv/resolvers/sockshare.py
@@ -1,5 +1,5 @@
 import re
-from resolv.shared import ResolverError, unescape, Task
+from resolv.shared import ResolverError, TechnicalError, unescape, Task
 
 class SockshareTask(Task):
 	result_type = "video"
@@ -13,7 +13,7 @@ class SockshareTask(Task):
 			import mechanize
 		except ImportError:
 			self.state = "failed"
-			raise ResolverError("The Python mechanize module is required to resolve Sockshare URLs.")
+			raise TechnicalError("The Python mechanize module is required to resolve Sockshare URLs.")
 		
 		matches = re.search("https?:\/\/(www\.)?sockshare\.com\/(file|embed)\/([A-Z0-9]+)", self.url)
 
@@ -29,7 +29,7 @@ class SockshareTask(Task):
 			browser.open("http://sockshare.com/embed/%s" % video_id)
 		except:
 			self.state = "failed"
-			raise ResolverError("The Sockshare site could not be reached.")
+			raise TechnicalError("The Sockshare site could not be reached.")
 		
 		try:
 			browser.select_form(nr=0)
@@ -42,6 +42,7 @@ class SockshareTask(Task):
 		matches = re.search("playlist: '([^']+)'", page)
 		
 		if matches is None:
+			self.state = "failed"
 			raise ResolverError("No playlist was found on the given URL; the Sockshare server for this file may be in maintenance mode, or the given URL may not be a video file. The Sockshare resolver currently only supports video links.")
 		
 		playlist = matches.group(1)
@@ -50,7 +51,7 @@ class SockshareTask(Task):
 			browser.open("http://www.sockshare.com%s" % playlist)
 		except:
 			self.state = "failed"
-			raise ResolverError("The playlist file for the given URL could not be loaded.")
+			raise TechnicalError("The playlist file for the given URL could not be loaded.")
 		
 		matches = re.search("url=\"([^\"]+)\" type=\"video\/x-flv\"", browser.response().read())
 		
@@ -64,7 +65,7 @@ class SockshareTask(Task):
 			video_title = unescape(re.search('<a href="\/file\/[^"]+"[^>]*><strong>([^<]*)<\/strong><\/a>', page).group(1))
 		except:
 			self.state = "failed"
-			raise ResolverError("Could not find the video title.")
+			raise TechnicalError("Could not find the video title.")
 		
 		stream_dict = {
 			'url'		: video_file,
diff --git a/resolv/resolvers/youtube.py b/resolv/resolvers/youtube.py
index a1cde41..d6f5b7c 100644
--- a/resolv/resolvers/youtube.py
+++ b/resolv/resolvers/youtube.py
@@ -1,5 +1,5 @@
 import re, urllib, urllib2, urlparse
-from resolv.shared import ResolverError, unescape, Task
+from resolv.shared import ResolverError, TechnicalError, unescape, Task
 
 class YoutubeTask(Task):
 	result_type = "video"
@@ -19,7 +19,11 @@ class YoutubeTask(Task):
 			contents = self.fetch_page(self.url)
 		except urllib2.URLError, e:
 			self.state = "failed"
-			raise ResolverError("Could not retrieve the specified URL.")
+			raise TechnicalError("Could not retrieve the specified URL.")
+		
+		if '<meta property="og:video:type"' not in contents:
+			self.state = "invalid"
+			raise ResolverError("The specified URL is not a valid YouTube video.")
 		
 		map_start = "url_encoded_fmt_stream_map="
 		map_end = "\\u0026amp;"
@@ -29,21 +33,21 @@ class YoutubeTask(Task):
 			snippet = contents[pos_start:]
 		except ValueError:
 			self.state = "failed"
-			raise ResolverError("The starting position for the YouTube player configuration could not be found. Is the URL really a valid video page?")
+			raise TechnicalError("The starting position for the YouTube player configuration could not be found. Is the URL really a valid video page?")
 		
 		try:
 			pos_end = snippet.index(map_end)
 			stream_map = snippet[:pos_end]
 		except ValueError:
 			self.state = "failed"
-			raise ResolverError("The ending position for the YouTube player configuration could not be found.")
+			raise TechnicalError("The ending position for the YouTube player configuration could not be found.")
 		
 		try:
 			stream_map = urllib.unquote(stream_map)
 			streams = stream_map.split(',')
 		except:
 			self.state = "failed"
-			raise ResolverError("The YouTube player configuration is corrupted.")
+			raise TechnicalError("The YouTube player configuration is corrupted.")
 		
 		stream_pool = []
 		
@@ -52,7 +56,7 @@ class YoutubeTask(Task):
 			
 			if len(fields) < 6:
 				self.state = "failed"
-				raise ResolverError("The amount of fields in the YouTube player configuration is incorrect.")
+				raise TechnicalError("The amount of fields in the YouTube player configuration is incorrect.")
 			
 			signature = fields['sig'][0]
 			video_url = "%s&signature=%s" % (fields['url'][0], signature)
@@ -111,7 +115,7 @@ class YoutubeTask(Task):
 			video_title = unescape(re.search('<meta property="og:title" content="([^"]*)">', contents).group(1))
 		except:
 			self.state = "failed"
-			raise ResolverError("Could not find the video title.")
+			raise TechnicalError("Could not find the video title.")
 		
 		self.results = {
 			'title': video_title,
diff --git a/resolv/shared.py b/resolv/shared.py
index 4c583a9..94ba755 100644
--- a/resolv/shared.py
+++ b/resolv/shared.py
@@ -11,6 +11,13 @@ class ResolverError(Exception):
 		
 	def __str__(self):
 		return repr(self.val)
+		
+class TechnicalError(Exception):
+	def __init__(self, value):
+		self.val = value
+		
+	def __str__(self):
+		return repr(self.val)
 
 class Task():
 	captcha = None
diff --git a/setup.py b/setup.py
index 639f629..93b19fa 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup
 
 setup(name='resolv',
-      version='1.1.0',
+      version='1.2.0',
       description='Module for resolving URLs from filehosters, video hosters, and other content hosters',
       author='Sven Slootweg',
       author_email='resolv@cryto.net',