I just read through all the posts in this thread and haven't found a solution for this:
When I import the product, it goes all the way to 99% done and then I get a database error:
MySQL Error : Duplicate entry 'vbspell_allow_all' for key 1
I've been looking for a solution for an hour with no success - please, someone take pity on me and tell me what to do?
On edit - searched and found 3 things in vb_settings from a previous installation of vbSpell - there are three vbspell_ variables in vb_setting that need to be deleted before you import the product. I haven't tested yet but no more database errors; hopefully it worked!
On edit again - I spoke too soon.

Javascript errors, and it doesn't work.