Last year, I installed antivirus 2010 and replaced the version that came with Systemworks Standard 12.0. I had no problems. This year, when I went to install Antivirus 2011, I got a message that it was incompatible with systemworks. This is not that big of a deal because I planned to delete systemworks and install Norton Utilities when the new version is available locally. I am just curious as to why.