[Mediawiki-l] can't build the docs

[Bob Purvy]

I'm trying to run mwdocgen.php in the maintenance
directory of MediaWiki, and this is the result I get:

[root at localhost maintenance]# php mwdocgen.php
Several documentation possibilities:
 0 : whole documentation (1 + 2 + 3)
 1 : only includes
 2 : only languages
 3 : only maintenance
 4 : only skins
 5 : only a given file
Enter your choice [0]:0
---------------------------------------------------
Launching the command:

phpdoc  -f
/usr/local/apache2/htdocs/mediawiki-1.5.0/*php  -d
/usr/local/apache2/htdocs/mediawiki-1.5.0/includes/,/usr/local/apache2/htdocs/mediawiki-1.5.0/languages/,/usr/local/apache2/htdocs/mediawiki-1.5.0/maintenance/,/usr/local/apache2/htdocs/mediawiki-1.5.0/skins/
-t /usr/local/apache2/htdocs/mediawiki-1.5.0/docs/html
 -dn MediaWiki --title "MediaWiki generated
documentation" --output "HTML:Smarty:HandS" --ignore
AdminSettings.php,LocalSettings.php,tests/LocalTestSettings.php
--parseprivate on --sourcecode on
---------------------------------------------------
: bad interpreter: No such file or directoryp
---------------------------------------------------
Phpdoc execution finished.
Check above for possible errors.

=======

I do have phpDocumentor installed
 (1.3.0rc3, since the 1.2 consistently failed to
install with a "bad md5 checksum" error)

So how do I fix this?