This extension originally worked great. I could save sessions, restore whole sets of windows and tabs, etc. For some time now, this extension has become useless. It does still save sessions, and I can open individual tabs again, but it will not restore windows or whole sessions again, which is the whole reason why I installed it. I now have to click each individual tab listed to open them all back up again. Such a pain!

Until this extension works properly again, I cannot use it at all. Went from 5 stars to 1 star.