was able to save and load a session, but since i use tree style tab - the hierarchy of the tabs was lost. thankfully, the vertical order was preserved, so only the 'groupings' were lost.

honestly, it was not a big deal at all. (took less than a minute to put them back into groups manually for quite a few tabs)

i don't honestly expect a third party extension to play nice with every other third party extension - that would be crazy. as far as i'm concerned, this extension did exactly what it said it would do.