Problem in 3.1 alpha builds? Rated 5 out of 5 stars

I like this extension very much, but as I'm a nightly user, I've seen it not working anymore from some day on in August 2008 with Firefox 3.1 builds. That is, when I open TS sidebar, nothing is there; type in some tags, no results.

I've tested with clean profile, when I tag some pages and install TS, this seemed to get working. But if I restore my bookmarks from a .json file (which is the standard bookmark backup file with Tags stored inside), I get the same blank sidebar again.

Would you please take a look inside? Thanks

This review is for a previous version of the add-on (3.1).