Hi Steven,

that's weird indeed. I have installed the latest css buttons version (2.5) on both my live shop (1.3.6 but modified) and on a fresh 1.3.6 install. And I don't have this problem on either. To be sure I just did some testorders on the fresh 1.3.6 install. Also I never heard about problems like this before with the CSS buttons.

Maybe you can try to comment out the $parameters hack I recently added to make the CSS buttons simulate image buttons (added to fix the GV edit button bug):
Code:
    // bof hack to simulate image button (replace parameter by _x parameter)
    // needed for gv name="edit" button (other named buttons are name="btn_submit" and name="submit1" and ...??)
    if (strpos($parameters, 'name')!== false){
    // replace by regular expression
      $s=strpos($parameters, '"', strpos($parameters, 'name'))+1;
      $e=strpos($parameters, '"', $s);
      $name = substr($parameters, $s, $e-$s);
      // replaces values of both name and value ()
      //$parameters = str_replace($name, $name . '_x', $parameters);
      // replaces the value of name only
      $parameters = substr_replace($parameters, $name . '_x', $s, $e-$s);
    }
    // eof hack to simulate image button
(in the includes/functions/extra_fuctions/css_buttons.php file)