Catalog filter and mixit block

Hello
I opted for the journal theme and on the front page, there is a block called mixit_up block that shows and is great but is not assigned to journal theme and yet is showing up. My intent was to figure out if it is a views filter block and how i could change the items to match my products. But I cannot find it.
So I went in search in views and nothing there. I saw catalog filter in commercebox dashboard and tried to look there but I got an error.

Notice: Undefined index: commercebox_filters_settings_form in drupal_retrieve_form() (line 771 of /...../includes/form.inc).
Warning: call_user_func_array() expects parameter 1 to be a valid callback, function 'commercebox_filters_settings_form' not found or invalid function name in drupal_retrieve_form() (line 806 of /..../includes/form.inc).
I would appreciate if you can give me some advice why this is happening. I am baffled how it is showing up on front page but Can't find it anywhere else.
I truly like this feature and I believe is very useful, only if i could find it and use it.