What webservice are you calling? It looks like you're calling one which is "ISO 8859-1" encoded, which only allows UTF-7 characters (bytes 0-191 if I'm not mistaken) 195 refers to "Ã", which is not conform to the ISO 8859-1 standard.
If I were you I'd doublecheck the encoding the webservices uses (you can set the loglevel to debug to check the exact messages exchanged). If it is indeed the ISO 8859-1, you should contact the webservice administrator and inform him that he isn't conforming to the standard :) If he's using another encoding that does allow non-UTF-7 characters it's probably a connectionbus error, please file a bug report ;)
A character is being send which the parser doesn't like. Probably 'é'. I can't really help you with a solution. I suspect this should be fixed in the connectionbus?