If you want to download new maps through BeGraphic Pro, you need to have write access for the folder "C:\Program Files\BeGraphic Pro\Content\Maps\09 Downloaded maps".
To do this please follow these steps:
Go to C:\Program Files\BeGraphic Pro\Content\Maps\
Right click on the folder called "09 Downloaded maps"


Type "everyone" then click on Check names (WARNING: "Everyone" depends of the system language. i.e.: if you use a french windows don't type "everyone" but "tous le monde")

Check all the box in the "Allow" column
Close all dialogs by clicking on "Ok"