Android Studio Gradle build error :app:mergeDebugResources, Crunching Cruncher loader.png failed

Question

I am trying to integrate Google Signin in my Android App. I am facing issue with building apk when I include Google Services Dependencies. Below are my gradle files and error log. The google services lib is also prompting me to use gradle-wrapper 2.10 and not 2.8

PROJECT LEVEL GRADLE FILE:

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
    repositories {
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:1.3.0'
        classpath 'com.google.gms:google-services:2.0.0-alpha5'
    }
}

allprojects {
    repositories {
        jcenter()
        mavenCentral()
    }
}

APP LEVEL GRADLE FILE:

apply plugin: 'com.android.application'
apply plugin: 'com.google.gms.google-services'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"

    defaultConfig {
        applicationId "com.jaldirecharge"
        minSdkVersion 9
        targetSdkVersion 23
    }

    buildTypes {
        release {
            minifyEnabled true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
        }
    }

    useLibrary 'org.apache.http.legacy'
}

dependencies {
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:support-v4:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.mcxiaoke.volley:library:1.0.6'
    compile 'com.google.code.gson:gson:2.4'
    compile 'com.google.android.gms:play-services-auth:8.3.0'
    compile files('libs/gcm.jar')
    compile files('libs/libGoogleAnalyticsServices.jar')
    compile files('libs/socialauth-4.3.jar')
    compile 'com.facebook.android:facebook-android-sdk:4.9.0'
    compile files('libs/socialauth-android-3.0.jar')
    compile files('libs/universal-image-loader-1.8.3.jar')
}

ERROR LOGS:

Information:Gradle tasks [:app:assembleDebug]
:app:preBuild UP-TO-DATE
:app:preDebugBuild UP-TO-DATE
:app:checkDebugManifest
:app:preReleaseBuild UP-TO-DATE
:app:prepareComAndroidSupportAppcompatV72311Library UP-TO-DATE
:app:prepareComAndroidSupportCardviewV72311Library UP-TO-DATE
:app:prepareComAndroidSupportDesign2311Library UP-TO-DATE
:app:prepareComAndroidSupportMultidex101Library UP-TO-DATE
:app:prepareComAndroidSupportRecyclerviewV72311Library UP-TO-DATE
:app:prepareComAndroidSupportSupportV42311Library UP-TO-DATE
:app:prepareComFacebookAndroidFacebookAndroidSdk490Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesAuth830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBase830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesBasement830Library UP-TO-DATE
:app:prepareComGoogleAndroidGmsPlayServicesMeasurement830Library UP-TO-DATE
:app:prepareDebugDependencies
:app:compileDebugAidl UP-TO-DATE
:app:compileDebugRenderscript UP-TO-DATE
:app:generateDebugBuildConfig UP-TO-DATE
:app:generateDebugAssets UP-TO-DATE
:app:mergeDebugAssets UP-TO-DATE
:app:generateDebugResValues UP-TO-DATE
:app:processDebugGoogleServices
:app:generateDebugResources
:app:mergeDebugResources

AAPT err(Facade for 1282826090) : No Delegate set : lost message:libpng error: Not a PNG file AAPT err(Facade for 1543523483) : No Delegate set : lost message:libpng error: Not a PNG file AAPT: libpng error: Not a PNG file AAPT: libpng error: Not a PNG file :app:mergeDebugResources FAILED Error:Execution failed for task ':app:mergeDebugResources'.

Crunching Cruncher loader.png failed, see logs Information:BUILD FAILED Information:Total time: 9.017 secs Information:1 error Information:0 warnings Information:See complete output in console

Answer 1

Shahar has given right answer, only point I would like to add in is-

I had hundred+ images in my project and checking every image was not possible, so what I did is used a tool to convert all of them in PNG at a time. I am MAC user so I used Preview App. I found one of the image was saved as PNG but not png file.