Total Finder not opening on Login

Approximately once a week Total Finder does not open on login.
I have Yosemite 10.10.2. I saved Total Finder 1.6.17.dmg , open it and reinstall Total Finder. It then opens on login for about a week and then I repeat the process. Some times I delete Total Finder before reinstalling and sometimes I reinstall over it. This makes no difference.