topic Nullpointer Exception after registering a Designer Extension in Alfresco Archive

Nullpointer Exception after registering a Designer Extension

chris889 — Sat, 31 Dec 2011 12:21:17 GMT

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

Re: Nullpointer Exception after registering a Designer Extension

chris889 — Sat, 31 Dec 2011 13:55:03 GMT

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.