I asked this before because I donât get it. External packages like Zinc seem to be modified when integrated into pharo. Looking at the changes between to newest Zinc from Svenâs repository and the one in pharo there are a few differences. As an example there is ZnCharacterReadWriteStream>>#tab writeStream tab Where is this method added? Are the changes pushed back to Sven? In my project I use Zinc-REST. So I need to add the repository for Zinc and load the REST group. When this is loaded it pulls in the other Zinc packages which removes the methods like the one above and my image gets stuck because Epicea relies on that method and I get a debugger. So at the moment I can only create a new image when I disable Epicea. Why is it done that way? Best would be to use the version from Sven and make changes there. If that is not possible it would be good to use an extra package that does extension methods to Zinc. But this way is asking for trouble IMHO. Norbert