Hi, the Pharo 9 finally removed the DeprecatedFileStream package. Please, check whether your projects stopped to use this deprecated file streams API.
The migration guide is in the FileStream class comment. or here: https://pharoweekly.wordpress.com/2018/03/19/new-files-in-pharo-migration-guide-how-tos-and-examples/ or here: https://github.com/pavel-krivanek/pharoMaterials/blob/master/Filestreams.MD Cheers, -- Pavel
