# WowzaStreamingEngine-4.1.2 upgrade issues **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [March 9, 2015, 5:51pm UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747 "2015-03-09T17:51:07Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Tome\_N1](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@Tome\_N1](https://community.wowza.com/u/Tome_N1)\ **Post date:** [March 9, 2015, 5:51pm UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747/1 "2015-03-09T17:51:07Z")
After upgrading to WowzaStreamingEngine-4.1.2 inside error log I can see the following error: ```auto HTTPStreamerAdapterCupertinoStreamer.service : java.lang.NullPointerException|at com.wowza.wms.httpstreamer.cupertinostreaming.httpstreamer.HTTPStreamerAdapterCupertinoStreamer.onPlaylist(HTTPStreamerAdapterCupertinoStreamer.java:2189)|at com.wowza.wms.httpstreamer.cupertinostreaming.httpstreamer.HTTPStreamerAdapterCupertinoStreamer.serviceMsg(HTTPStreamerAdapterCupertinoStreamer.java:477)|at com.wowza.wms.httpstreamer.cupertinostreaming.httpstreamer.HTTPStreamerAdapterCupertinoStreamer.service(HTTPStreamerAdapterCupertinoStreamer.java:432)|at com.wowza.wms.server.ServerHandler.a(ServerHandler.java:636)|at com.wowza.wms.server.ServerHandler.a(ServerHandler.java:375)| ``` It didn’t appeared on previous version. I’m guessing it indicates that no stream is available when I request a HLS stream, but is there any way to disable this to be logged because when a channel drops input stream and more then 1000 clients try it and reconnect to it it fills the logs with unnecessary info, I don’t want to disable all logging only this behavior and because it is logged as ERROR is in the top level of the logging and it appears on all logs. Regards, ---
**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\ **Post date:** [March 9, 2015, 1:36pm UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747/2 "2015-03-09T13:36:40Z")
Hello there. You can probably modify it in the logging log4j file by not showing that category. It would be useful if we could see the error in context as there may be a better way to handle the request. Please open a ticket with support by sending a zipped copy of your /conf and /logs folders to support@wowza.com They will have a look and be able to assist with the issue and or explain how to edit the log4j file to omit this error. Kind regards, Salvadore ---
**Author:** ![sal\_jefferson](https://avatars.discourse-cdn.com/v4/letter/s/6de8d8/32.png) [@sal\_jefferson](https://community.wowza.com/u/sal_jefferson)\ **Post date:** [March 30, 2015, 4:05pm UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747/3 "2015-03-30T16:05:11Z")
Hello Carlos, please see the upgrade guide and follow it closely: [How to upgrade Wowza Media Server software to Wowza Streaming Engine](https://www.wowza.com/docs/how-to-upgrade-wowza-media-server-software-to-wowza-streaming-engine) Kind regards, Salvadore ---
**Author:** ![Tome\_N1](https://avatars.discourse-cdn.com/v4/letter/t/45deac/32.png) [@Tome\_N1](https://community.wowza.com/u/Tome_N1)\ **Post date:** [March 10, 2015, 11:28am UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747/4 "2015-03-10T11:28:47Z")
Hi Salvadore, I wouldn’t like to modify log4j because this log record is in ERROR level of logging if I disable this level I will not be able to have log for other errors. It will be good if you have some Property in the Application configuration to tell not to log records when you request stream that is no available. Regards, ---
**Author:** ![carlos\_Castillo](https://avatars.discourse-cdn.com/v4/letter/c/4491bb/32.png) [@carlos\_Castillo](https://community.wowza.com/u/carlos_Castillo)\ **Post date:** [March 30, 2015, 1:39pm UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747/5 "2015-03-30T13:39:24Z")
Hello, I’m currently running 4.0.3 and would like to upgrade to the latest version 4.1.2, how do i do this? Carlos, ---
**Author:** ![carlos\_Castillo](https://avatars.discourse-cdn.com/v4/letter/c/4491bb/32.png) [@carlos\_Castillo](https://community.wowza.com/u/carlos_Castillo)\ **Post date:** [March 31, 2015, 5:24am UTC](https://community.wowza.com/t/wowzastreamingengine-4-1-2-upgrade-issues/40747/6 "2015-03-31T05:24:11Z")
Hello Salvadore, Do this procedures include how to apply the update via putty on Centos System if not can you guide me on how to do this? Carlos,