angular: Angular 2 in IE11 development build works fine, but production build throws an exception.

Hi there, I am using generator-angular2-webpack-starter To get me up with angular 2. Initially I was suffering from the #6450 issue (and #6516, and #6556), but fixed it with this shim. This made ie11 (ver. 11.0.9600.18161 under win8.1 64bit) run angular 2 without a hitch when served with ‘npm run server’ i.e. the default server for development. However, when I run the production server ( ‘npm run server:prod’ ) I am getting this error from ie:

SyntaxError: Expected ')'
   {
      [functions]: ,
      __proto__: { },
      description: "Expected ')'",
      message: "Expected ')'",
      name: "SyntaxError",
      number: -2146827282,
      stack: "SyntaxError: Expected ')'
   at evalExpression (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:1:5145)
   at TemplateCompiler.prototype._createViewFactoryRuntime (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:12:18596)
   at Anonymous function (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:12:16304)
   at Zone.prototype.run (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:39:28533)
   at Anonymous function (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:9:15715)
   at Anonymous function (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:39:28195)
   at lib$es6$promise$$internal$$tryCatch (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:15:19609)
   at lib$es6$promise$$internal$$invokeCallback (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:15:19933)
   at Anonymous function (http://localhost:8080/vendor.8fc5d82b021700e458db.bundle.js:15:29419)
   at Anonymous function (http://localhost:8080/vendor.8fc5d82b0217"
   }

and but a “Loading…” message on the screen. Any help highly appreciated. I’ve got to get this running in ie asap. Thank you for your time in advance. Jared