Topic: SQL error creating a static page group

I tried to create a page group with a static listing of pages and included "Admin:NewsBoy" into it, and upon saving got this error:

Description or location of error:
Error returned by MySQL extension: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1

Most recent SQL query:

INSERT INTO page_group_members(pg_id,page_id,namespace) VALUES;

It seems there are no values being inserted.