I'm having the same sort of problems with the ALLOW ACL that others are having. 
 I was trying the suggestions that Harry Metske put onto the 'FAQ 
Authorization' page at jspwiki.org, but I am having trouble getting 
SecurityConfig.jsp to run.   It's frustrating, because I know I got it to run 
in the past, but now it seems to be bombing out and presenting the following :

________________________________
JSPWiki has detected an error
Error Message
An unknown exception java.lang.NullPointerException was caught by Error.jsp.
Exception
java.lang.NullPointerException
Place where detected
native methodjava.lang.Class.isAssignableFrom(), line -2

If you have changed the templates, please do check them. This error message may 
show up because of that. If you have not changed them, and you are either 
installing JSPWiki for the first time or have changed configuration, then you 
might want to check your configuration files. If you are absolutely sure that 
JSPWiki was running quite okay or you can't figure out what is going on, then 
by all means, come over to jspwiki.org<http://www.jspwiki.org/> and tell us. 
There is more information in the log file (like the full stack trace, which you 
should add to any error report).

And don't worry - it's just a computer program. Nothing really serious is 
probably going on: at worst you can lose a few nights sleep. It's not like it's 
the end of the world.

________________________________

            Any suggestions anyone might have would be appreciated.  I don't 
think I've messed around with the templates.   The only thing I've ever done to 
touch them a very minor change to one of the CSS files to remove the hash marks 
at the end of major headings on the pages.  I get the same thing on Internet 
Explorer 6 and Firefox 3.0.8.  I've also tried clearing out all cookies and 
temporary internet files, but I still get the same thing.

Eric R. Carlson
[email protected]

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