If you’re a rooting lover and dev, you may want to try the SuperSU Beta and give Chainfire a hand in perfecting the update to Android 5.0. Lollipop is a big step towards security with its implementation of SELinux and, even if it managed to get root access on Lollipop just after release, Chainfire had a little bit more trouble in succeeding than usual.
A large number of root apps are broken on Lollipop 5.0 and most of them may be fixed by the new SuperSU build. Just in case you’re interested in the SuperSU v2.23BETA, you can give Chainfire’s official site a click. They are always accepting feedback on root apps, especially on those busted with Lollipop that probably don’t work with the beta.
SuperSU is a standard TWRP flashable ZIP that doesn’t do harm to your device, if you know how to install it safely of course. In order to enable it on Lollipop, you will need a patched CFAR kernel, an action you will luckily have to do only once. Be careful flashing!