I had the same problem as well (even with "use default CSS" turned off) ...but the problem only occured on the home page.
I then disabled all other modules (beyond the one giving me the problem) on the home page and voila - it worked.
So then from there I enabled the modules again one by one and found another News Pro GK4 module that I was using on the same page that caused the problem. This one had the "use default CSS" enabled causing the other to display incorrectly.
So lesson learned is, make sure ALL News Pro GK4 modules have that "use default CSS" turned off" if more than 1 are active on the same page.