My setup file is missing avg zen 2015

Other posting (https://support.avg.com/answers?id=906b0000000D3spAAC).
AVG Guru

i think that someone deleted my setup file and it wont uninstall or switch over to free version without it other setup files wont work

Other posting (https://support.avg.com/answers?id=906b0000000D3spAAC).
AVG Guru