Thread:Skin talk:Chameleon/PHP Fatal error: Class 'Skins\\Chameleon\\Hooks\\SetupAfterCache' not found/reply (5)

Hmm, should work. I don't really know what could be wrong. Make sure that the installation in step 4 returns without errors, I guess, also check, that Chameleon actually appears in the composer.json file. Other than that, I have no idea.