ERREUR

Depuis plusieur jours lorsque je ve écrire un message voilà ce qui arrie:500 Servlet Exception
java.io.CharConversionException: stream:2287: illegal utf8 encoding at
0xe9 0x3c 0x2f
at com.caucho.xml.readers.Utf8Reader.error(Utf8Reader.java:175)
at com.caucho.xml.readers.Utf8Reader.readSecond(Utf8Reader.java:127)
at com.caucho.xml.readers.Utf8Reader.read(Utf8Reader.java:105)
at com.caucho.xml.XmlParser.parseNode(XmlParser.java:313)
at com.caucho.xml.XmlParser.parseInt(XmlParser.java:246)
at com.caucho.xml.AbstractParser.parse(AbstractParser.java:690)
at com.caucho.xml.AbstractParser.parseDocument(AbstractParser.java:860)
at com.caucho.xml.AbstractParser.parseDocument(AbstractParser.java:833)
at com.caucho.jsp.XslFilter.service(XslFilter.java:151)
at com.caucho.server.http.FilterChainServlet.doFilter(FilterChainServlet.java:96)
at com.caucho.server.http.QNamedDispatcher.forward(QNamedDispatcher.java:157)
at com.caucho.server.http.QNamedDispatcher.chain(QNamedDispatcher.java:86)
at com.caucho.server.http.FilterChainBase.handleChain(FilterChainBase.java:93)
at com.caucho.server.http.FilterChainPage.doFilter(FilterChainPage.java:185)
at com.caucho.server.http.Invocation.service(Invocation.java:315)
at com.caucho.server.http.RunnerRequest.handleRequest(RunnerRequest.java:346)
at com.caucho.server.http.RunnerRequest.handleConnection(RunnerRequest.java:274)
at com.caucho.server.TcpConnection.run(TcpConnection.java:139)
at java.lang.Thread.run(Thread.java:595)

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Resin 2.1.13 (built Thu Apr 1 10:57:42 PST 2004)
Qui pe m'expliquer.........MERCI