When the web installer gets to the environmental checks it dies on call to formslib.. did a debgging('foo') to get the backtrace ;)

foo
line 24 of lib/formslib.php: call to debugging()
line 30 of lib/portfolio/forms.php: call to require_once()
line 35 of lib/portfoliolib.php: call to require_once()
line 2579 of mod/data/lib.php: call to require_once()
line 555 of lib/environmentlib.php: call to include_once()
line 452 of lib/environmentlib.php: call to environment_custom_checks()
line 86 of lib/environmentlib.php: call to environment_check()
line 802 of install.php: call to check_moodle_environment()
line 610 of install.php: call to form_table()

Warning: require_once(HTML/QuickForm.php) [function.require-once]: failed to open stream: No such file or directory in /srv/moodledev/moodle/lib/formslib.php on line 27

Fatal error: require_once() [function.require]: Failed opening required 'HTML/QuickForm.php' (include_path='.:/usr/share/php:/usr/share/pear') in /srv/moodledev/moodle/lib/formslib.php on line 27