AVG Internet Security 2016

I'm trying to load this program which I purchased in August

When I try and install it I get an incompatibility issue with other AVG software but the message doesn't tell me whats incompatible.

I already have AVG Internet Security 2014, AVG Zen and AVG PC Tune Up which has recently reverted to the free version.

Do I have to de-install the previous version of Internet Securitiy before installing the new version or is there another issue?