Hey there, just wanted to make a comment on the 'logback.XML to Groovy translator' webpage. It seems that ampersands ("&") are not HTML escaped an therefore, if you have some logical expression within your XML like this: <expression> marker != null && marker.contains("SMTP_TRIGGER") </expression> You will see the following error: // XML parsing failure // org.xml.sax.SAXParseException: The entity name must immediately follow the '&' in the entity reference. So you have to escape the ampersands yourself ("&"), like this: <expression> marker != null && marker.contains("SMTP_TRIGGER") </expression> To make it work. Just wanted to let you know ;)