Installatin fail error code oxc0070643

I keep  getting error code oxc0070643 when trying to install avg. Can anyone tell me what that means?

Nolan, On the error message are you also seeing Description: Event exec_finished?. Which AVG product are you actually attempting to install?. Do you have any other 3rd party AV or previous AVG AV version installed on your system?.
AVG Guru