The format of the XML-file has changed as there is now a tag available.
This could be the reason. Did you consider this?
I think you can open the XML file from the wizard and step through it an. Or simply add it manually like:localhost
*****
*****3306
[default]
s
and similar for target.
the [default] should work without no problems if charset defaults are the same on both servers. However if you have accented (non-ASCII)characters and servers uses different defaults (uft8 and latin1 for instance) you can specify [latin1] for both connections and data will still sync coreectly.