I am using jForum 2.1.4 with MySQL 4.0.15 and keep getting java.lang.reflect.InvocationTargetException after almost every action, when accessing the forum index page. If I restart the server error clears, but after posting or moderating I soon get the message again.
Hard to say. It's not common to exceptions occur in this part of the code. Did you do something "different" by hand, like changing jforum's tables while the container is running, or any other behavior that was not made via the Admin Panel?
Did you tried to reinstall JForum?
Rafael [originally posted on jforum.net by Rafael Steil]
It all started after creating new forum categories, but I managed to fix these errors by saving all user groups again after adding each category as described in one of the posting on this forum.
I have just restarted Tomcat again and posted / erased couple of new topics - seems to be working. So, maybe this is ok as long as I don't create any new categories. Is there a patch somewhere for the category problem.
If I try to reinstall the software can I somehow keep the database?