Make newest Whatsapp compatible with ART:
1. Switch to Dalvik, reboot.
2. Uninstall Whatsapp.
3. delete data/data/com.whatsapp
4. download and flash the libart.so_flashable.zip with TWRP or CWM and reboot.
https://drive.google.com/file/d/ ... EU/edit?usp=sharing
5. Switch to ART, reboot.
6. Install Whatsapp from Google Play.
Done!