That means you have to add that language label in your language section. Log in to your admin and go to the language section. Add the label there with the text.
Or use the following code in the patch/sql section (mysql area):
Code:
REPLACE into xcart_languages VALUES ('US','lbl_points','points','Labels');
I'm wondering why BCSE hasn't just put that code in their sql patch. Would've been much easier. Hope this helps.