Great plugin! I received the following errors with WP_DEBUG on when activating the most recent version of this plugin:
Strict Standards: Non-static method GFPDF_Settings::settings_page() should not be called statically, assuming $this from incompatible context in /home/ardsley/public_html/wp-content/plugins/gravity-forms-pdf-extended/pdf.php on line 247
Strict Standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method GFPDF_InstallUpdater::gf_pdf_not_deployed() should not be called statically in /home/ardsley/public_html/wp-includes/plugin.php on line 406
Hopefully these standards errors can be addressed in a future update of the plugin. Thanks!