We just purchased and installed the 2015 version of AVG Performance yesterday. Untl then, I've used 2012 with NO issues whatsoever. We use Windows 7 Ulitmate (quad core / 4 gB RAM) and Chrome as the default browser. After many hours of research yesterday, I no longer have 1-Click Maintenance check our browser but this morning, nothing works; registry cleaner, disk cleanup, nothing! No single module within the program will run to finish. I've already uninstalled and re-installed the program several times. After each install, it will run one module without an error and then the errors begin again and the program completely shuts down. This is a wonderful program but I simply do not have the time to uninstall/re-install this program on a daily basis and do not feel that I should, taking into consideration the other versions ran fine and WITH Chrome being selected as my default browser. Please…can anyone offer any solution? We purchased the product because of past positive experiences (we've been using Tune Up since 2006) but I'm beginning to wonder about this 2015 version and if I completely wasted my money.