android studio - genymotion - camera not working

I tried to turn on the camera and set the memory like the lesson but I can't find the settings for them in genymotion. I see a camera setting at runtime in the emulator. I've turned that on and set the cameras to 'dummy webcam'. When i click the button to take a picture it displays the error 'there was a problem accessing your cameras external storage'. Any suggestions?

more info...

I have an app i'm delveloping in android studio that uses the devices camera When i try to access the camera from genymotion emulator or an actual device i get the error "There was a problem accessing your device's external storage" I've tried to change back the sdk version to 21 but still does not work. I'm using the follow instructions.

For android studio users:

right click the App directory choose the "module setting" option change the ADK Platform as what you need Click Apply The gradle will rebuild the project automatically.

if i change the flavors tab target sdk version when i click apply it reverts back to 23.

this is what my gradle looks like

android {
    compileSdkVersion 21
    buildToolsVersion '21.0.2'

    defaultConfig {
        applicationId "com.immiso.glennr.ribbit"
        minSdkVersion 14
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            runProguard false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile files('libs/Parse-1.11.0.jar')
    //compile 'com.parse:parse-android:1.+'
    // You must install or update the Support Repository through the SDK manager to use this dependency.
    compile 'com.parse.bolts:bolts-android:1.+'
    // You must install or update the Support Repository through the SDK manager to use this dependency.
    compile 'com.android.support:support-v13:19.+'
}

I would like to get this working as its an assignment. What do i need to change to get this working?