[Pharo-users] ImageWorker error in P6.1

Hello! The ImageWorker project, that provides the possibility to fork a OS process with a copy of current image, was working fine in Pharo 60400 but it's not working on latest 6.1. The output there is "External Image Failed: 256". Any hint? Steps to reproduce error: 1. download: curl get.pharo.org/60+vm | bash 2. load: Metacello new repository: 'http://www.smalltalkhub.com/mc/PharoExtras/ImageWorker/main'; configuration: 'ImageWorker'; version: #stable; load. 3. inspect: ImageWorker do: [ 1+2 ] within: 1 seconds onTimeout: [ self error: 'timeout' ]. Cheers, Martín