diff --git a/autobuild.xml b/autobuild.xml
index dc002f1080265e8978144ad9d7a5913864b262e0..4d77a74c5b070dd84efbc663d749f2a0bdec158e 100755
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -1536,11 +1536,11 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>d2a2221741c31c28ec28e974b035099c</string>
+              <string>a58244a2348197aec11ac9f3dcf5c2ff</string>
               <key>hash_algorithm</key>
               <string>md5</string>
               <key>url</key>
-              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/hg/repo/3p-llceflib_3p-llceflib/rev/308076/arch/Darwin/installer/llceflib-1.4.0.308076-darwin-308076.tar.bz2</string>
+              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/hg/repo/3p-llceflib_3p-llceflib/rev/308140/arch/Darwin/installer/llceflib-1.4.0.308140-darwin-308140.tar.bz2</string>
             </map>
             <key>name</key>
             <string>darwin</string>
@@ -1550,18 +1550,18 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>8e4a649ecc7ba1f39b5d54fed935ac14</string>
+              <string>880970d9fa0da5922044de5716d59043</string>
               <key>hash_algorithm</key>
               <string>md5</string>
               <key>url</key>
-              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/hg/repo/3p-llceflib_3p-llceflib/rev/308076/arch/CYGWIN/installer/llceflib-1.4.0.308076-windows-308076.tar.bz2</string>
+              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/hg/repo/3p-llceflib_3p-llceflib/rev/308140/arch/CYGWIN/installer/llceflib-1.4.0.308140-windows-308140.tar.bz2</string>
             </map>
             <key>name</key>
             <string>windows</string>
           </map>
         </map>
         <key>version</key>
-        <string>1.4.0.308076</string>
+        <string>1.4.0.308140</string>
       </map>
       <key>llphysicsextensions_source</key>
       <map>
diff --git a/indra/media_plugins/cef/media_plugin_cef.cpp b/indra/media_plugins/cef/media_plugin_cef.cpp
index 182b7f254659bc6cdfd180307bac95cfeb302bfe..c8a52ff5fe636125f36bd1dcb75872dceab0b0b9 100644
--- a/indra/media_plugins/cef/media_plugin_cef.cpp
+++ b/indra/media_plugins/cef/media_plugin_cef.cpp
@@ -438,7 +438,7 @@ void MediaPluginCEF::receiveMessage(const char* message_string)
 				settings.cache_enabled = true;
 				settings.cache_path = mCachePath;
 				settings.accept_language_list = mHostLanguage;
-				settings.user_agent_substring = mUserAgentSubtring;
+				settings.user_agent_substring = mLLCEFLib->makeCompatibleUserAgentString(mUserAgentSubtring);
 
 				bool result = mLLCEFLib->init(settings);
 				if (!result)