I've got exactly the same problem, and I've also tried to import tiddlers on a remote server, without success. Also, when I try to update the core (I know that there isn't a new version, I was just checking), I get an error instead of a message stating that TiddlyWiki is fully updated.
Firefox 5.0 TiddlyWiki 2.6.2 (local) Windows 7 -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/tiddlywiki?hl=en.

