Why do I get this message and how do I fix??

I have an Acer Aspire 3680 with OS upgrade Windows7 Ultimate. It’s how I got it and it ran fine.
It seems to have started this nonsense after I installed iobit’s Advanced System care free ver. To try a quick fix I updated my IE8 to IE9 but same result. I even uninstall/reinstalled iobit.
It seems to only do this after I close out, mostly when I have more than one tab running; like if I close out of one tab to browse another. It doesn’t automatically close out all my browsers. It leaves them open and operable, thankfully.
Do I need to re-register my dll’s? or can I turn off that message somehow?
Advanced Stsem Care’s registry cleaner did not fix this, by the way!
Thank you, CDWright