Pluggable transports bundles 2.4.17-rc-1-pt2 with Firefox 17.0.10esr
There are new Pluggable Transports Tor Browser Bundles with Firefox 17.0.10esr. They are made from the Tor Browser Bundle release of November 1.
These are mostly the same as 2.4.17-rc-1-pt1 released a few days ago, the only change being a workaround that allows them to run on OS X Mavericks.
so Mike can take a look.
My current assumption is that this check is broken in some way, and otherwise your TBB is fine.