# Add License Key **URL:** \ **Category:** Wowza Streaming Engine\ **Created:** [February 21, 2008, 6:00pm UTC](https://community.wowza.com/t/add-license-key/227 "2008-02-21T18:00:13Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![system](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/system/32/447_2.png) [@system](https://community.wowza.com/u/system)\ **Post date:** [February 21, 2008, 6:00pm UTC](https://community.wowza.com/t/add-license-key/227/1 "2008-02-21T18:00:13Z")
Hello, where can I add or change the License Key in Linux Fedors6 I run ./startup.sh but to no avail JC ---
**Author:** ![Charlie\_Good](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/charlie_good/32/383_2.png) [@Charlie\_Good](https://community.wowza.com/u/Charlie_Good)\ **Post date:** [February 21, 2008, 10:12am UTC](https://community.wowza.com/t/add-license-key/227/2 "2008-02-21T10:12:57Z")
To change the license key edit conf/Server.license and just replace the old key with the new key. Charlie ---
**Author:** ![Charlie\_Good](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/charlie_good/32/383_2.png) [@Charlie\_Good](https://community.wowza.com/u/Charlie_Good)\ **Post date:** [February 21, 2008, 10:48am UTC](https://community.wowza.com/t/add-license-key/227/3 "2008-02-21T10:48:33Z")
Are you getting an error message when you run ./startup.sh from the /usr/local/WowzaMediaServerPro/bin folder? Charlie ---
**Author:** ![Charlie\_Good](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/charlie_good/32/383_2.png) [@Charlie\_Good](https://community.wowza.com/u/Charlie_Good)\ **Post date:** [February 21, 2008, 11:06am UTC](https://community.wowza.com/t/add-license-key/227/4 "2008-02-21T11:06:20Z")
It looks like you are running an older version of Java or the GNU version of Java. Wowza Pro requires at least Java 5 (aka 1.5) (we recommend the latest version of Java 6 (aka 1.6) – Java 6 Update 4). You can download the JDK from the [java.sun.com](http://java.sun.com) website. When the installation is complete you should be able to execute the command: java -version It will return the current java version number. If it is still running the old version read this post for suggestions: [https://www.wowza.com/forums/showthread.php?t=520](https://www.wowza.com/forums/showthread.php?t=520) Charlie ---
**Author:** ![Charlie\_Good](https://sea2.discourse-cdn.com/flex002/user_avatar/community.wowza.com/charlie_good/32/383_2.png) [@Charlie\_Good](https://community.wowza.com/u/Charlie_Good)\ **Post date:** [February 21, 2008, 4:30pm UTC](https://community.wowza.com/t/add-license-key/227/5 "2008-02-21T16:30:29Z")
First, download and install JDK 6 Update 4 from the Sun web site. Go through the same process again. If it still doesn’t work, edit bin/setenv.sh change the the line: ```auto from: _EXECJAVA=java to: _EXECJAVA=/usr/bin/java ``` That will force it to use the Java defined at /usr/bin/java. You can verify that this is the correct version of Java by execute the command: /usr/bin/java -version Charlie ---
**Author:** ![J\_Cole](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@J\_Cole](https://community.wowza.com/u/J_Cole)\ **Post date:** [February 21, 2008, 6:43pm UTC](https://community.wowza.com/t/add-license-key/227/6 "2008-02-21T18:43:19Z")
The conf/Server.license is not in /usr/local/WowzaMediaServerPro/conf or in WowzaMediaServerPro-1.3.3/conf jc ---
**Author:** ![J\_Cole](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@J\_Cole](https://community.wowza.com/u/J_Cole)\ **Post date:** [February 21, 2008, 6:58pm UTC](https://community.wowza.com/t/add-license-key/227/7 "2008-02-21T18:58:29Z")
[root@ns5 bin]# ./startup.sh Error parsing VHosts.xml (file:///usr/local/WowzaMediaServerPro/conf/VHosts.xml): java.lang.ClassCastException: java.util.ArrayList cannot be cast to org.w3c.dom.NodeList java.lang.ClassCastException: java.util.ArrayList cannot be cast to org.w3c.dom.NodeList at com.wowza.wms.bootstrap.Bootstrap.getServerInfo(Bootstrap.java:496) at com.wowza.wms.bootstrap.Bootstrap.startServer(Bootstrap.java:238) at com.wowza.wms.bootstrap.Bootstrap.main(Bootstrap.java:47) Exception in thread “main” java.lang.NoClassDefFoundError: com.wowza.wms.server.Server at java.lang.Class.initializeClass(libgcj.so.7rh) at java.lang.reflect.Method.invoke(libgcj.so.7rh) at com.wowza.wms.bootstrap.Bootstrap.startServer(Bootstrap.java:246) at com.wowza.wms.bootstrap.Bootstrap.main(Bootstrap.java:47) Caused by: java.lang.ClassNotFoundException: java.util.concurrent.Executor not found in java.net.URLClassLoader{urls=[file:/usr/local/WowzaMediaServerPro/lib/wms-stream-file.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-server.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-commons-modeler.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-stream-live.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-bootstrap.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-plugin-bwcheck.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-ant.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-core.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-jlayer.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-mediareader-flv.jar,file:/usr/local/WowzaMediaServerPro/lib/log4j-1.2.14.jar,file:/usr/local/WowzaMediaServerPro/lib/jid3lib-0.5.4.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-stream-shoutcast.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-stream-record.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-mediawriter-flv.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-plugin-textchat.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-mediareader-mp3.jar,file:/usr/local/WowzaMediaServerPro/lib/wms-plugin-security.jar], parent=gnu.gcj.runtime.SystemClassLoader{urls=[file:/usr/local/WowzaMediaServerPro/bin/wms-bootstrap.jar], parent=gnu.gcj.runtime.ExtensionClassLoader{urls=[], parent=null}}} at java.net.URLClassLoader.findClass(libgcj.so.7rh) at java.lang.ClassLoader.loadClass(libgcj.so.7rh) at java.lang.ClassLoader.loadClass(libgcj.so.7rh) at java.lang.Class.initializeClass(libgcj.so.7rh) …3 more ---
**Author:** ![J\_Cole](https://avatars.discourse-cdn.com/v4/letter/j/e56c9b/32.png) [@J\_Cole](https://community.wowza.com/u/J_Cole)\ **Post date:** [February 21, 2008, 10:52pm UTC](https://community.wowza.com/t/add-license-key/227/8 "2008-02-21T22:52:43Z")
Hello, I try but could not get it to work, I cannot reinstall it. /usr/sbin/alternatives --config java There are 2 programs which provide ‘java’. Selection Command * * * - 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java - 2 /usr/java/jre1.5.0\_09/bin/java Enter to keep the current selection[+], or type selection number: 2 [root@ns5 ~]# java -version -bash: java: command not found [root@ns5 ~]# ln -sf /usr/java/jre1.6.0\_03/bin/java /usr/bin/java [root@ns5 ~]# java -version -bash: java: command not found