Error while performing gradle sync

[theayryan]

G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\21.0.0\res\drawable-xhdpi\abc_ab_share_pack_holo_light.9.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\21.0.0\res\drawable-hdpi\abc_spinner_mtrl_am_alpha.9.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\21.0.0\res\drawable-hdpi\abc_ab_share_pack_holo_dark.9.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\21.0.0\res\drawable-hdpi\abc_ab_share_pack_holo_light.9.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\21.0.0\res\drawable-xhdpi\abc_ab_share_pack_holo_dark.9.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\exploded-aar\com.android.support\appcompat-v7\21.0.0\res\drawable-mdpi\abc_ab_share_pack_holo_dark.9.png: libpng warning: iCCP: Not recognizing known sRGB profile that has been edited

:app:processDebugManifest :app:processDebugResources G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\res\debug\values-v21\values.xml:5: error: Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material'.

G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\res\debug\values-v21\values.xml:6: error: Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Body1'.

G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\res\debug\values-v21\values.xml:7: error: Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Body2'.

G:\AndroidTwitterGoogleApiJavaClient-master\app\build\intermediates\res\debug\values-v21\values.xml:8: error: Error retrieving parent for item: No resource found that matches the given name 'android:TextAppearance.Material.Button'.

....... continues for 100 more such resources

This happens when I perform a gradle sync any idea why it happens ?

When I don't compile Route Drawer these errors dissappear