[Pharo-project] a problem with Zinc on Pharo 1.1.1

Hi, I'm trying to execute this: ZnClient get: 'http://127.0.0.1:333/analytics/feeds/data' username: 'estebanlm@gmail.com' password: 'shhhh' ... on a Pharo 1.1.1 image, with latest #stable Zinc version, and I'm getting DNU on: #mimeEncode:multiLine: ZnUtils class>encodeBase64: string ^ (Base64MimeConverter mimeEncode: string readStream multiLine: false) contents is a bug, or something I have wrong? cheers, Esteban