Cannot Edit Pages with this plugin activated?!

I was editing a page after installing this plugin, but when I went to save, only a blank page resulted: /wp-admin/post.php with no query string.

After I deactivated this plugin and re-edited and saved the page, the save worked as normal with a query string at the end, like wp-admin/post.php?post=20&action=edit&message=1

Any idea how to fix this? I am able to edit the php, but after a quick scan through the plugin code in wpcf7_dynamic_text.php file nothing stood out… then again, I’m no WP plugin expert.

Any suggestions appreciated. Thank you.

http://wordpress.org/extend/plugins/contact-form-7-dynamic-text-extension/