That was the very first thing I tried but it didn't work. I'm a bit frustrated with it. I just upgraded to Pro and outside of this bug I really like it. I also run the Windows version in Parallels. No problems there.
I've been able to find information regarding the 304 error but not for this. It comes up after installation. I even reinstalled it and it did the same thing. When it does that if you click on the ESET icon in the top bar area the list is greyed out. I have to then open it via my applications folder for it to become active again. I'm running OX 10.8.5. I installed the very same program on my husband's Mac (OX Lion) and there was no problems. Help.