Hi,
First, about the warning out of the backbone.php. No one else has reported any issues, but you can take care of it this way:
The warning refers to code executed out of a different module, and the code just throws up a bit of system info on the setup page.
For the short term, you can repair this in your installation:
Change line 285 and 286 in admin/vtmax-setup-options.php
$vtmax_functions = new VTMAX_Functions;
$your_system_info = $vtmax_functions->vtmax_getSystemMemInfo();
to
// $vtmax_functions = new VTMAX_Functions;
// $your_system_info = $vtmax_functions->vtmax_getSystemMemInfo();
Second, I’m really not getting what you’re trying to do. Are you trying to set a minimum limit or max limit?
In any event, the free version of the program will only filter at the cart level, not at the product level… So any minimum rule you create will apply to all products in the cart.
Vark