<p dir="auto">I've used the 15.4.1 version of the react and react-dom together. I get the following errors:</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/12233474/21084429/0ee3ab0a-bfc9-11e6-9aa9-2edd7b8bf4ff.png"><img src="https://cloud.githubusercontent.com/assets/12233474/21084429/0ee3ab0a-bfc9-11e6-9aa9-2edd7b8bf4ff.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/12233474/21084427/048eda9e-bfc9-11e6-9fae-873d93762d1a.png"><img src="https://cloud.githubusercontent.com/assets/12233474/21084427/048eda9e-bfc9-11e6-9fae-873d93762d1a.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">This is my set-up:</p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/12233474/21084418/e695190e-bfc8-11e6-8cd0-ff3b3fdb5fb5.png"><img src="https://cloud.githubusercontent.com/assets/12233474/21084418/e695190e-bfc8-11e6-8cd0-ff3b3fdb5fb5.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto"><a target="_blank" rel="noopener noreferrer nofollow" href="https://cloud.githubusercontent.com/assets/12233474/21084422/f2ca4046-bfc8-11e6-9597-e4ffa0078d86.png"><img src="https://cloud.githubusercontent.com/assets/12233474/21084422/f2ca4046-bfc8-11e6-9597-e4ffa0078d86.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">I don't have the problem if I use the same code, but the 15.1.0 version instead of 15.4.1.</p>
<p dir="auto">I use <code class="notranslate">react-with-addons</code> in a RequireJS enviroment. If I try to use <code class="notranslate">React.addons.Perf</code>, I get a <code class="notranslate">ReferenceError: ReactDOM is not defined</code> from <a href="https://github.com/facebook/react/blob/15-dev/src/umd/shims/ReactAddonsDOMDependenciesUMDShim.js#L26">https://github.com/facebook/react/blob/15-dev/src/umd/shims/ReactAddonsDOMDependenciesUMDShim.js#L26</a>.<br>
This is a regression from 15.3.x.</p>