followed instruction but splash hangs

[JayAtCornwallCollege]

error on page Potentially unhandled rejection [1] TypeError: _.assign is not a function at new Aside (http://localhost:9000/dist/system/aside.js:29:13) at eval (http://localhost:9000/dist/main.js!eval:15:53) at O (http://localhost:9000/jspm_packages/es6-module-loader.js:7:7453) at K (http://localhost:9000/jspm_packages/es6-module-loader.js:7:7085) at y.7.y.when (http://localhost:9000/jspm_packages/es6-module-loader.js:7:10759) at v.7.v.run (http://localhost:9000/jspm_packages/es6-module-loader.js:7:9795) at a.3.a._drain (http://localhost:9000/jspm_packages/es6-module-loader.js:7:1746) at 3.a.drain (http://localhost:9000/jspm_packages/es6-module-loader.js:7:1400) at MutationObserver.b (http://localhost:9000/jspm_packages/es6-module-loader.js:7:3312)(anonymous function) @ es6-module-loader.src.js:140f @ es6-module-loader.src.js:167i @ es6-module-loader.src.js:189