No need to call organizeClasses after initialize.

external/sdk/lib/amberc.js

@@ -211,7 +211,6 @@ function create_compiler(configuration) {
             return new Promise(configuration.requirejs.bind(null, pluginPrefixedLibraries));
         })
         .then(function () {
-            configuration.globals.AmberBootstrapInitialization._organizeClasses();
             (configuration.globals.Smalltalk._adoptPackageDictionary || configuration.globals.Smalltalk._adoptPackageDescriptors).call(configuration.globals.Smalltalk);
 
             console.log('Compiler loaded');