I mean carats. ^ is a carat.
In Appsense Environment Manager Personalisation if you are specifying the version of the application executable version in the RegEx field it is a important to use
^11.* for a exe with a 11.0.2600.0 version. The carat makes appsense read the string from the beginning and without it, it probably will not work.
https://www.myappsense.com/documentation/20140723/AppSense%20Environment%20Manager%20Personalization%20Product%20Guide.pdf