Sideberry has an auto snapshot feature which restores previous states. I've successfully used it twice in three years.

This happened once to me a few years back when I installed it for the first time, I had to configure a few things and it hasn't happened since. I have installed it on other computers since without any configuration and no problems either so maybe they fixed the problem.

In my opinion Tree Style is better than nothing but the performance, personalization, etc of Sidebery is something else.