Release 0.40.2

source/_posts/2017-03-22-broken-dependencies.markdown

@@ -0,0 +1,26 @@
+---
+layout: post
+title: "0.40.2 and broken dependencies"
+description: "Due to a bug in our dependency installation, some older versions can get into a broken state."
+date: 2017-03-22 08:04:05 +0000
+date_formatted: "March 22, 2017"
+author: Paulus Schoutsen
+author_twitter: balloob
+comments: true
+categories: Release-Notes
+---
+
+TL; DR: We have just released version 0.40.2 that includes a fix related to the installation of dependencies.
+
+Some users in the last few days have been reporting that their Home Assistant installation fails to start with an error in the http component:
+
+```
+ImportError: No module named 'aiohttp.file_sender'
+```
+
+The problem is that Home Assistant did not handle the case where a dependency would want to install a core dependency of Home Assistant that is newer than what Home Assistant works with. For now, we have identified the following two components that can cause this issue:
+
+  - AppleTV (0.38+)
+  - Android IP Webcam (0.40+)
+
+This issue has been resolved by 0.40.2. If you are on an impacted version and cannot upgrade to the latest version just yet, a temporary workaround will be to remove the `<config dir>/deps` directory and stop using the above mentioned integrations. In the case of AppleTV, you will also have to disable the discovery component to prevent it from being auto-detected.