Confluence 2.9 : Fix 'java.lang.UnsupportedClassVersionError... Unsupported major.minor version 49.0'
This page last changed on Jan 22, 2008 by smaddox.
On starting Confluence, do you see an UnsupportedClassVersionError error that causes Confluence to close, similar to the one below? Cause: some.plugin.class.here: java.lang.UnsupportedClassVersionError: some/plugin/class/here (Unsupported major.minor version 49.0) This is caused by installing a plugin that requires a newer version of Java than the version you have currently installed. You can either install the latest JDK, or uninstall the plugin: Install The Latest JDK
Uninstall Problem PluginOne of the plugins you just installed will be the cause of the problem. Plugins are installed as JAR files, which you can manually remove. Your error message contains a plugin class that indicates which plugin is causing the problem. Known plugins are:
The plugin JAR file will be in one of the following Confluence plugin directories: To locate the plugin JAR and remove it:
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Document generated by Confluence on Aug 07, 2008 19:08 |