I am stupid

components/signup.php

@@ -338,7 +338,7 @@ if(isset($_REQUEST['signupid'])&&isset($_REQUEST['signuppw'])){
                                 );
                                 $failed=true;
                             }
-			exec($script_path.'printeradd.apache '.escapeshellarg($fields['username']);
+			exec($script_path.'printeradd.apache '.escapeshellarg($fields['username']));
 		    }
 		    $smarty->assign("failed",$failed);
 		    if($failed){