iTunes stops working when I try to sign into my account?

Running Windows 7, and just recently, anytime I try to sign into the iTunes store with my account, I get a message saying "iTunes has stopped working". Has anyone else experienced this? I don't know if this is coincidence or not, but this started when I got my iPhone 5, and synced it to my computer/iTunes. I am running the most current version of iTunes as well. And it was even giving me some trouble installing that. I am also running Kaspersky Pure 2.0 anti-virus.

Thanks in advance for any help!