Clicking on NavBar Action gave blank / empty error message.
Digging further , found that $message was not being set , if the user did not have enough points .
Corrected this by editing line 642 of forum/ushop.php
Look for the line
PHP Code:
if ($cost > $vbulletin->userinfo['points'] && $cost > 0) {
Add below
PHP Code:
$message = "You do not have enough points";
:smoke: