Problem with FF 64.0b4 and TSM 4.2.0:
Option: "Use the "discarded" property"
prevents to open more then one window!
Otherwise a very usefull addon.

Excellent add-on. I use it to manage the ridiculous number of tabs I (usually) keep open. The save window tabs, save session, auto save, and auto backup have saved me from a ton of headaches. The developer seems to update fairly often and responds to user issues. I will be sending a donation as soon as I get my next job. Much ♥ sienori.

Not very reliable in saving my sessions! I just lost what I was doing last time!

OK.

I'm using it together with TreeStyleTabs and it has support for it, which kinda works. It opens each tab after a small delay, so restoring yesterday's session always takes a few seconds.
Unfortunately, it only kinda works: sometimes random tabs are missing (may or may not spontaneusly reappear in the future), sometimes the tree structure is all fucked up in different ways, sometimes the opened extension page doesn't resolve to the tab it's supposed to be.
I also have problems with trees mixing their subtabs and not being able to move them around, but I'm not sure how much of this is TreeStyleTab's problem.

If you're looking for something that 60% of the time works every time, look no further.

Очень не хватает экспорта настроек дополнения

Thanks for the great plugin!
Worked always flawlessly for me.