Try re-copying the script, as well as making sure there is a space between your entry and older entries and plugins. This will in-sure that you did not miss a piece of the Java from twitter, and spaces will allow no conflicting with other c
odes and plugins.
Not works for me but thx :(( …
This is a problem also recognized by AddThis but they still working on it, so I asked to twitter.
Good luck with that … You may have to find a re-placement plugin, if you know which one is conflicted.
I do not lose hopes I think I will replace twitter official widget with another one because it is in conflict with all pluging for sharing content…