topic Re: Nullpointer Exception after registering a Designer Extension in Alfresco Archive https://connect.hyland.com/t5/alfresco-archive/nullpointer-exception-after-registering-a-designer-extension/m-p/59820#M36861 <HTML><HEAD></HEAD><BODY><SPAN>I found the issue myself. The problem was that my extension was referencing some other external libraries (to pull in some constants). This obviousely caused problems to the designer since those libraries were not available at the time the time the designer was running. It would be nice if the JarClassLoader class would give a proper error message instead.</SPAN></BODY></HTML> Sat, 31 Dec 2011 13:55:03 GMT chris889 2011-12-31T13:55:03Z Nullpointer Exception after registering a Designer Extension https://connect.hyland.com/t5/alfresco-archive/nullpointer-exception-after-registering-a-designer-extension/m-p/59819#M36860 I am trying to create my own Activiti Designer Extension (following the explanations in the User Guide, Chapter "Extending Activiti Designer"). After registering my extension and opening a new or existing diagram, I'm getting a null-pointer exception. Please find the stacktrace from the log file bel Sat, 31 Dec 2011 12:21:17 GMT https://connect.hyland.com/t5/alfresco-archive/nullpointer-exception-after-registering-a-designer-extension/m-p/59819#M36860 chris889 2011-12-31T12:21:17Z Re: Nullpointer Exception after registering a Designer Extension https://connect.hyland.com/t5/alfresco-archive/nullpointer-exception-after-registering-a-designer-extension/m-p/59820#M36861 <HTML><HEAD></HEAD><BODY><SPAN>I found the issue myself. The problem was that my extension was referencing some other external libraries (to pull in some constants). This obviousely caused problems to the designer since those libraries were not available at the time the time the designer was running. It would be nice if the JarClassLoader class would give a proper error message instead.</SPAN></BODY></HTML> Sat, 31 Dec 2011 13:55:03 GMT https://connect.hyland.com/t5/alfresco-archive/nullpointer-exception-after-registering-a-designer-extension/m-p/59820#M36861 chris889 2011-12-31T13:55:03Z