ADS1299: pins burn during powerup

Part Number: ADS1299

Tool/software:

Hello,

I am new to PCB design and have been having trouble powering up the ADS1299 chip. My design connects to bipolar supplies. I am on my second design iteration, but in both iterations burns on pins of the ADS would occur soon after 5V and 3.3V were applied to the circuit. In the first design iteration, a pin in the 55-58 region would burn. In my second iteration, where I used a universal ground plane, pin 50 (DVDD) burned. 

Here is the schematic for my second design iteration. Can you help me diagnose the issue?

ADS1299 sm25.pdf