[Pharo-users] Working with zipped files

Hi, by peeking around in "Deep into Pharo" I thought that | zf fr | fr := 'I:\SAS_Projekte\project.egp' asFileReference. zf := FileSystem zip: fr. zf store open. should be used to open a zip file programmatically. That fails with "ZnInvalidUTF8: Invalid utf8 input detected" Looking at MCMczReader, it skips the FileSystem API completely. In FileSystem-Tests-* I find DiskFileSystemTest and MemoryFileSystemTest, no ZipFileSystemTest to see how it's supposed to be done. Did I do it wrong? Or is FileSystem not yet "finalized" in that area? Best regards, Markus