hi
have you disabled sandbox in avast.
check to see where marketfeeder is installed, it could be in program files (86)
then avast file system shield, exclude marketfeeder pro 7 in the program files/program files (86)
and in users, win7
then in the web shield, exclude marketfeeder pro 7\feeder.exe in the program files/program files (86)
and the same for the marketfeeder pro 7\teditor.exe in the program files/program files (86)
mcbee