Error 1064 on products load

Hi!
Whenever the model tries to load some products from the DB (Front Page, by category etc.), I get the following error.

Oops ! 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 ')) WHERE a.published = 1 AND b.language='hr-HR' AND ((a.product_customergroups =' at line 4

I found the solution.

I set the sorting methods on Bestsellers, even if I did not have any order yet.

Deear David,

It's fine that you found the problem by yourself.

If you need any other helps, don't hesitate to let me know.

Sincerely, Giang