[Pharo-users] PharoJS - converting to Javascript error

Hello. I am trying to convert my Pharo (4.0) classes to Javascript. I wrote a Pharo PBE-LightsOut application as book PBE. Initially converted LOCell and LoGame classes. Loaded these classes in a browser from an index.html and accused lack of SimpleSwitchMorph, SimpleButtonMorph and BorderedMorph. Command to convert: JbSmalltalkToJavaScriptExporter exportClasses: {BorderedMorph } packages: #() inNewFileNamed: 'BorderedMorph.js' Converting BorderedMorph this error occurs: MessageNotUndestood: WorldMorph >> javaScriptName The other classes were converted to JavaScript without problems. Appreciate any help. thank you