I am trying to parse XML files with rest APIs but I am getting an error due to the absence of this classVariable: NameStartChars. I could also reproduce this error with this pharo cast from Laurent where he tries to parse Picasa XML. http://www.pharocasts.com/2010/02/rest-xml-parsing-and-photos.html To reproduce the error, execute these snippets: Gofer new repository: 'http://ss3.gemstone.com/ss/xmlsupport'; package: 'Collections-BitmapCharacterSet'; package: 'Collections-OrderPreservingDictionary'; package: 'ConfigurationOfXMLSupport'; package: 'Pastell'; package: 'XML-Parser'; package: 'XML-Tests-Parser'; load Gofer new squeaksource: 'XMLSupport'; package: 'XML-Parser'; squeaksource: 'Pharocasts'; package: 'Picasa'; load. |photos| photos:=PicasaAPI new searchPhotos: 'miles+davis' maxResults: 3. PhotoWall new viewPhotos: photos. The problem is that the variable is used before being initialized. I'll see if I can produce a fix. regards, Usman