CS0117: 'ProjectName.Droid.Resource.Styleable' does not contain a definition for
<p>I just upgraded from MvvmCross 3.5.1 to MvvmCross 4.0. I'm getting around 40 errors like this when building Android in the Resource.Designer.cs file. </p>

<p>iOS works fine. </p>

<pre><code>error CS0117: 'ProjectName.Droid.Resource.Styleable' does not contain a definition for 'Theme_seekBarStyle'
</code></pre>

<p>The line of code looks like this. </p>

<pre><code>global::Chance.MvvmCross.Plugins.UserInteraction.Droid.Resource.Styleable.Theme_seekBarStyle = global::ProjectName.Droid.Resource.Styleable.Theme_seekBarStyle;
</code></pre>

<p>I've tried cleaning and rebuilding multiple times as well as deleting bin and obj folders. </p>

<p>I've also removed the nuget packages and had them restored as well as reinstalled them but nothing seems to work. </p>

<p>I've tried updating AppCompat but it won't update, saying it couldn't find versions of Xamarin Forms compatible with the version, even though I have the latest version of Xamarin forms. </p>

<p>All my Android SDKs are up to date </p>

<p>Has anyone else encountered this error? If so, how did you resolve it? </p>

<p>Thank you,</p>