In the package Filesystem,

FSPlatformResolver class >> forCurrentPlatform
| platformName |
platformName := �SmalltalkImage current platformName.
^ (self allSubclasses detect: [:ea | ea platformName = platformName]) new

should be replaced by

FSPlatformResolver class >> forCurrentPlatform
| platformName |
platformName := �OSPlatform platformName.
^ (self allSubclasses detect: [:ea | ea platformName = platformName]) new