New version: 0.2.1.030.2.5
For me, this link worked: sessionsaver-0.2.1.030.2.5
The latest discussion, tips etc. as always at the MozillaZine Forum.
There’s also a more permanent page with the installer files and readme info here.
And the excellent MozillaZine Knowledgebase on SessionSaver covers absolutely everything you need to know.