Laravel4错误：类Illuminate \ Foundation \ Application包含1个抽象方法，因此必须声明为abstract

Question

我在作曲家更新（以及随后的自动加载生成器）后遇到此错误：

PHP Fatal error:  Class Illuminate\Foundation\Application contains 1 abstract method and must therefore be declared abstract or implement the remaining methods (Illuminate\Support\Contracts\ResponsePreparerInterface::readyForResponses)

我有一个带有这些依赖项的干净安装

"require": {
        "laravel/framework": "4.0.*",
        "cartalyst/sentry": "2.1.*"
    },

如果我切换到“laravel / framework”：“4.1。”，则此错误已修复。 4.0发生了什么。？