Pre-Post Build Command Runner Plug-in install issue ( ClassNotFound )

[Christopher Lefevre]

I tried to install the Pre-Post Build Command Runner at the request of a developer and in the logs I'm getting an error about a ClassNotFoundException for the Atlassian class: com.atlassian.bamboo.build.CustomPreBuildAction

I assume it's a permissions issue maybe? Not quite sure though, as the installation said to simply add it to the ./libs directory, and I matched all of the ownership/group/read/write permissions of every other plugin in the folder. Running on Ubuntu.

The stack trace does not seem to add much more useful context to me at least:
2017-02-21 13:32:33,787 ERROR [localhost-startStop-1] [DefaultPluginManager] There was an error loading the descriptor 'Pre Command Agent Runner' of plugin 'com.sysbliss.bamboo.plugins.prepost-build-command:5.10.0'. Disabling.
java.lang.NoClassDefFoundError: com/atlassian/bamboo/build/CustomPreBuildAction
        at java.lang.ClassLoader.defineClass1(Native Method)
        at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
        at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
        at java.net.URLClassLoader.defineClass(URLClassLoader.java:467)
        at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:368)
        at java.net.URLClassLoader$1.run(URLClassLoader.java:362)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:361)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:348)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1318)
        at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1166)
        at com.atlassian.plugin.util.ClassLoaderUtils.loadClass(ClassLoaderUtils.java:40)
        at com.atlassian.plugin.impl.StaticPlugin.loadClass(StaticPlugin.java:22)
        at com.atlassian.plugin.module.ClassPrefixModuleFactory.getModuleClass(ClassPrefixModuleFactory.java:44)
        at com.atlassian.plugin.module.PrefixDelegatingModuleFactory.guessModuleClass(PrefixDelegatingModuleFactory.java:145)
        at com.atlassian.plugin.descriptors.AbstractModuleDescriptor.loadClass(AbstractModuleDescriptor.java:204)
        at com.atlassian.plugin.descriptors.AbstractModuleDescriptor.enabled(AbstractModuleDescriptor.java:423)
        at com.atlassian.plugin.manager.DefaultPluginManager.notifyModuleEnabled(DefaultPluginManager.java:1883)
        at com.atlassian.plugin.manager.DefaultPluginManager.enableConfiguredPluginModule(DefaultPluginManager.java:1631)
        at com.atlassian.plugin.manager.DefaultPluginManager.enableConfiguredPluginModules(DefaultPluginManager.java:1608)
        at com.atlassian.plugin.manager.DefaultPluginManager.enableDependentPlugins(DefaultPluginManager.java:1094)
        at com.atlassian.plugin.manager.DefaultPluginManager.addPlugins(DefaultPluginManager.java:1055)
        at com.atlassian.bamboo.plugin.BambooPluginManager.addPlugins(BambooPluginManager.java:100)
        at com.atlassian.plugin.manager.DefaultPluginManager.earlyStartup(DefaultPluginManager.java:474)
        at com.atlassian.plugin.manager.DefaultPluginManager.init(DefaultPluginManager.java:404)
        at com.atlassian.bamboo.container.BambooContainer.init(BambooContainer.java:211)
        at com.atlassian.bamboo.container.BambooContainer.initialise(BambooContainer.java:196)
        at com.atlassian.bamboo.upgrade.UpgradeLauncher.initialiseBambooContainer(UpgradeLauncher.java:184)
        at com.atlassian.bamboo.upgrade.UpgradeLauncher.upgradeAndStartBamboo(UpgradeLauncher.java:97)
        at com.atlassian.bamboo.upgrade.UpgradeLauncher.contextInitialized(UpgradeLauncher.java:41)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4842)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5303)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:147)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1407)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1397)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: com.atlassian.bamboo.build.CustomPreBuildAction
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 43 more

[Krystian Brazulewicz]

installation said to simply add it to the ./libs directory

I understand you meant WEB-INF/lib. Anyways this is unexpected. Please contact Bamboo Support for help.