Problem with OSX 10.11 & older version of Total finder

Just curious. I have a 2008 Macbook Pro running osx 10.11. I downloaded the version of TotalFinder for that os, disabled sip, installed the app & reenabled sip. Unfortunately, my mbp will no longer boot up. It boots for about 30 seconds & just turns off. Has anyone else had this kind of problem & if so, did you find a solution? TIA?