WP-Foliolio enables a Web Developer/Designer to create a WordPress Portfolio for their work with wp's familiar content creation system.
Should this occur, the easiest solution to this is to visit the permalinks section of your WordPress admin. This will flush your permalinks settings and should make the site realise the Portfolio plugin is installed.
I will do my best to answer any comments that are left in the official channels (see support section), but I cannot offer any kind of guaranteed support.
This is version 0.1 software. Visit the plugin homepage and leave a comment if you have a feature request, I'm not a plugin developer generally but I will do my best to assist.