When using weblogic.xalan.transformer.TransfomerImpl I get the following error, but not under apache tomcat.
Can anyone help?

javax.xml.transform.TransformerException: org.xml.sax.SAXParseException: An invalid XML character (Unicode: 0xa0) was found in the element content of the document.
at weblogic.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java(Compiled Code))
at weblogic.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java(Inlined Compiled Code))
at weblogic.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java(Compiled Code))
at com.crosslogic.strata.xml.util.XSLTransformer.render(XSLTransformer.java:64)
....
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java(Compiled Code))
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java(Compiled Code))
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java(Inlined Compiled Code))
at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImpl.java(Compiled Code))
at weblogic.servlet.internal.RequestDispatcherImpl.include(RequestDispatcherImpl.java(Inlined Compiled Code))


The weblogic.apache.xalan.transformer.TransformerImpl is used instead of org.apache.xalan.transformer.TransformerImp.