diff --git a/deluge/plugins/execute/execute/core.py b/deluge/plugins/execute/execute/core.py
index a1df19ea5..9d95f74f9 100644
--- a/deluge/plugins/execute/execute/core.py
+++ b/deluge/plugins/execute/execute/core.py
@@ -108,6 +108,14 @@ class Core(CorePluginBase):
         else:
             save_path = info["save_path"]
 
+        # getProcessOutputAndValue requires args to be str
+        if isinstance(torrent_name, unicode):
+            torrent_id = torrent_id.encode("utf-8", "ignore")
+        if isinstance(torrent_name, unicode):
+            torrent_name = torrent_name.encode("utf-8", "ignore")
+        if isinstance(save_path, unicode):
+            save_path = save_path.encode("utf-8", "ignore")
+
         log.debug("[execute] Running commands for %s", event)
 
         def log_error(result, command):
diff --git a/deluge/ui/gtkui/gtkui.py b/deluge/ui/gtkui/gtkui.py
index 08bcfd4cc..dea68fdfe 100644
--- a/deluge/ui/gtkui/gtkui.py
+++ b/deluge/ui/gtkui/gtkui.py
@@ -373,7 +373,11 @@ Please see the details below for more information."), details=traceback.format_e
 
             if self.config["show_connection_manager_on_start"]:
                 # XXX: We need to call a simulate() here, but this could be a bug in twisted
-                reactor.simulate()
+                try:
+                    reactor._simulate()
+                except AttributeError:
+                    # twisted < 12
+                    reactor.simulate()
                 self.connectionmanager.show()
 
 
diff --git a/deluge/ui/tracker_icons.py b/deluge/ui/tracker_icons.py
index 91a02e46e..a9d55283a 100644
--- a/deluge/ui/tracker_icons.py
+++ b/deluge/ui/tracker_icons.py
@@ -39,7 +39,12 @@ from urlparse import urljoin, urlparse
 from tempfile import mkstemp
 
 from twisted.internet import defer, threads
-from twisted.web import error
+from twisted.web.error import PageRedirect
+try:
+    from twisted.web.resource import NoResource, ForbiddenResource
+except ImportError:
+    # twisted 8
+    from twisted.web.error import NoResource, ForbiddenResource
 
 from deluge.component import Component
 from deluge.configmanager import get_config_dir
@@ -235,7 +240,7 @@ class TrackerIcons(Component):
         error_msg = f.getErrorMessage()
         log.debug("Error downloading page: %s", error_msg)
         d = f
-        if f.check(error.PageRedirect):
+        if f.check(PageRedirect):
             # Handle redirect errors
             location = urljoin(self.host_to_url(host), error_msg.split(" to ")[1])
             self.redirects[host] = url_to_host(location)
@@ -375,14 +380,14 @@ class TrackerIcons(Component):
         error_msg = f.getErrorMessage()
         log.debug("Error downloading icon: %s", error_msg)
         d = f
-        if f.check(error.PageRedirect):
+        if f.check(PageRedirect):
             # Handle redirect errors
             location = urljoin(self.host_to_url(host), error_msg.split(" to ")[1])
             d = self.download_icon([(location, extension_to_mimetype(location.rpartition('.')[2]))] + icons, host)
             if not icons:
                 d.addCallbacks(self.on_download_icon_complete, self.on_download_icon_fail,
                                callbackArgs=(host,), errbackArgs=(host,))
-        elif f.check(error.NoResource, error.ForbiddenResource) and icons:
+        elif f.check(NoResource, ForbiddenResource) and icons:
             d = self.download_icon(icons, host)
         elif f.check(NoIconsError, HTMLParseError):
             # No icons, try favicon.ico as an act of desperation
diff --git a/tests/google.ico b/tests/google.ico
index ee7c943ab..f594697d2 100644
Binary files a/tests/google.ico and b/tests/google.ico differ