[Mediawiki-l] Infoboxes

[Azurite]

I went through the steps again on the Parser Functions page for 1.6, 
making sure to grab the version that's for PHP4 servers. I made sure I 
searched and replaced the appropriate lines, deleted the other lines 
mentioned, etc. I got rid of the error I last mentioned, but now a new 
one pops up:

array(2) { ["UnknownAction"]=> array(1) { [0]=> string(12) 
"actionCreate" } ["ParserClearState"]=> array(2) { [0]=> array(2) { 
[0]=> &NULL [1]=> string(10) "clearState" } [1]=> array(2) { [0]=> 
&object(extparserfunctions)(4) { ["mExprParser"]=> NULL ["mTimeCache"]=> 
array(0) { } ["mTimeChars"]=> int(0) ["mMaxTimeChars"]=> int(1000) } 
[1]=> string(10) "clearState" } } } Unknown datatype in hooks for 
ParserClearState

Backtrace:

    * GlobalFunctions.php line 602 calls wfbacktrace()
    * Hooks.php line 85 calls wfdebugdiebacktrace()
    * Parser.php line 172 calls wfrunhooks()
    * Parser.php line 3507 calls parser::clearstate()
    * MessageCache.php line 457 calls parser::transformmsg()
    * MessageCache.php line 406 calls messagecache::transform()
    * GlobalFunctions.php line 449 calls messagecache::get()
    * GlobalFunctions.php line 408 calls wfmsggetkey()
    * GlobalFunctions.php line 319 calls wfmsgreal()
    * Skin.php line 1085 calls wfmsg()
    * SkinTemplate.php line 369 calls skinmonobook::aboutlink()
    * OutputPage.php line 583 calls skinmonobook::outputpage()
    * Wiki.php line 251 calls outputpage::output()
    * index.php line 124 calls mediawiki::finalcleanup()


I wouldn't have the first clue what to look at for this...
Sorry to be such a pest to the list, but I really hope someone can help 
me with this. All I wanted was some simple Infoboxes!
-Azurite