[ https://issues.jboss.org/browse/FORGE-980?page=com.atlassian.jira.plugin.... ] Lennart Jörelid commented on FORGE-980: --------------------------------------- Fixed a project to simplify debugging, where the Plugin implementation itself does not use the abstract superclass from another Maven JAR (included in the module.xml of the active Plugin). Instead, I delegate to a class which, in turn, extends the abstract superclass from another Maven JAR. It seems that the classloading is completely broken here; the ClassNotFoundException is generated when trying to find a JBoss core class. Both the class and the module is definitely present, contrary to what is claimed by the JBoss ModuleClassLoader in the stacktrace above. Reproduced the error on a Windows 7 box as well: {code} Caused by: java.lang.ClassNotFoundException: org.jboss.forge.maven.plugins.Configuration from [Module "se.jguru.nazgul.f orge.factory.impl.aggregate.nazgul-forge-factory-impl-aggregate.dependencies:1.0.0-SNAPSHOT-d4c152bc-963a-4600-a696-dee4 c9c34968" from local module loader @4d865b28 (roots: C:\Applications\forge-distribution-1.2.3.Final\modules,C:\Users\len jo\.forge\plugins,C:\Development\nazgul\nazgul_forge\factory\factory-impl-aggregate)]^M at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190)^M at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468)^M at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456)^M at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:423)^M at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)^M at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120)^M ... 11 more {code} The interesting thing is that the ModuleClassLoader seems to use a ResourceLoaderSpec which rejects the modules packaged with the Forge Plugin - but not the modules within the JBoss Forge distribution/modules folder. Attaching two screenshots showing debug information from the two active classloaders. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira