There is a bug in the install of all projectbench
versions prior to and including v0.4.
This patch applies to projectbench v0.4, but it should
work just the same on prior versions (I think :) ).
Please extract this file in PB's install folder and
attempt to reexecute the install process.
Affected files: install.php
Commands for patching:
gunzip install.php.gz
Update version of install.php