Ошибка получения родительского элемента - Android Studio

После загрузки New L SDK и 20 SDK при попытке обновления, сборки или очистки моего проекта я получаю

Error:Error retrieving parent for item: No resource found that matches the given name '@android:TextAppearance.Material.SearchResult.Subtitle'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.ActionBar.Title'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.ActionBar.Menu'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.PopupMenu.Small'.
Error:Error retrieving parent for item: No resource found that matches the given name '@android:TextAppearance.Material.SearchResult.Title'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.ActionMode.Title'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.PopupMenu.Large'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.PopupMenu.Large'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.ActionBar.Subtitle'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.ActionMode.Subtitle'.
Error:Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Widget.PopupMenu.Small'.

Вот мой build.gradle

apply plugin: 'com.android.application'
buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.12.+'
    }
}

repositories {
    maven { url 'https://oss.sonatype.org/content/repositories/snapshots' }
}


    signingConfigs{
        release {
           ... Stuff Here ...
        }
    }
    buildTypes {
        debug {
            runProguard true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
            zipAlign true
            debuggable true
        }
        release {
            runProguard true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
            zipAlign true
            signingConfig signingConfigs.release

        }
    }

    dexOptions {
        incremental true
    }
}

android {
    compileSdkVersion 'android-L'
    buildToolsVersion '20.0.0'

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 'L'
    }
}


dependencies {
    compile fileTree(dir: 'libs', include: '*.jar')
    ...
    Some Projects
    ...
    compile 'com.android.support:cardview-v7:+'
    compile 'com.android.support:recyclerview-v7:+'
    compile 'com.android.support:appcompat-v7:+'
}

Я чувствую, что ive попробовал практически все, я не уверен, что еще попробовать. Любая помощь будет оценена.

Я просто обновился до новой бета-версии Android Studio (0.8.0) с 0.6.0 Canary