Versions.

@ngtools/webpack: 1.2.1
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error

TypeError: Cannot read property 'plugin' of null
at AotPlugin.apply (D:\code\angular2\Angular-webpack-AOT\node_modules@ngtools\webpack\src \plugin.js:211:34)
at Compiler.apply (D:\code\angular2\Angular-webpack-AOT\node_modules\tapable\lib\Tapable.j s:270:16)
at WebpackOptionsApply.process (D:\code\angular2\Angular-webpack-AOT\node_modules\webpack\ lib\WebpackOptionsApply.js:61:18)
at webpack (D:\code\angular2\Angular-webpack-AOT\node_modules\webpack\lib\webpack.js:32:48 )
at processOptions (D:\code\angular2\Angular-webpack-AOT\node_modules\webpack\bin\webpack.j s:275:14)
at Object. (D:\code\angular2\Angular-webpack-AOT\node_modules\webpack\bin\webpa ck.js:335:1)