Hi,
As i notice in the error logs, you are using Joomla2.5 (which you shouldn't). The SQL query error must be happening because of that.
Did you also try to disable the "Show Manufacturer Logo" parameter through Flexible VM3 Template" plugin? Error message should be gone after disabling "Show Manufacturer Logo" parameters through plugin.
MAKE SURE TO DISABLE "Show Manufacturer Logo" FROM EVERYWHERE. There total of 4 parameters you need to select NO for;
- Category - ListView
- Category - GridView
- Category - MultGridView
- Product Details Page
Regards.