[horde] Problem with null.php

[Jeremy Oddo]

Hi all--

<install info>
* RH 9
* horde CVS (from 2003-06-11)
* agora CVS (from 2003-06-11)
* hermes CVS (from 2003-06-11)
* imp CVS (from 2003-06-11)
* kronolith CVS (from 2003-06-11)
* mnemo CVS (from 2003-06-11)
* nag CVS (from 2003-06-11)
* rakim CVS (from 2003-06-11)
</install info>

I'm getting an error with many of the apps (nag, mnemo, kronolith, etc.). 
The error is:

Warning: Illegal offset type in /var/www/html/horde/lib/Category/null.php
on line 122


Seeing as how I'm getting it with several modules, I'm guessing that it's
a horde problem.  Anyone know what this is caused from?

Thanks,
Jeremy