https://community.qvc.com/t5/Electronics/I-Have-A-Mac-Question/m-p/193259#M2807 <P>When checking my System Preferences System File, I get the message that my system has been changed by "another application". Does anyone know what this might mean?</P> Mon, 23 Apr 2012 21:40:33 GMT MaggieToo 2012-04-23T21:40:33Z https://community.qvc.com/t5/Electronics/I-Have-A-Mac-Question/m-p/193259#M2807 <P>When checking my System Preferences System File, I get the message that my system has been changed by "another application". Does anyone know what this might mean?</P> Mon, 23 Apr 2012 21:40:33 GMT https://community.qvc.com/t5/Electronics/I-Have-A-Mac-Question/m-p/193259#M2807 MaggieToo 2012-04-23T21:40:33Z