[Plugin: WP Print Friendly] Print links return 404 – WP 3.1.2 / Print Friendly 0.3

Installed the plugin as normal, followed instructions about going to permalink page and clicking “save changes” button after activation.

I used the function in my theme as follows:

<?php wpf_the_print_link(); ?>

It outputs the text link perfectly but when I click it it just 404s.

Here is the post url followed by the url the print link outputs:

http://example.com/section/environmental/business/2011/05/testing-2
http://example.com/section/environmental/business/2011/05/testing-2/print

My permalinks are setup as follows:

/section/%category%/%year%/%monthnum%/%postname%

Note that ‘business’ is a child category to ‘environmental.’

I have also tried just letting the plugin put in the links. When I do that it outputs two links like this “Printer Friendly | Printer Friendly” which both link to the same url mentioned above.

Any assistance would be greatly appreciated.

http://wordpress.org/extend/plugins/wp-print-friendly/