I recently got a new PCB revision and the footprint appears to be correct, as I can now flash the ESP32

However when the firmware runs, I get the following messages repeated through the USB serial terminal (meaning the chip keeps resetting as far as I understand):

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:4
load:0x0034ffff,len:455360511
ets Jun  8 2016 00:22:57

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:4
load:0x0034ffff,len:455360511
ets Jun  8 2016 00:22:57

I'm not sure if this a software or hardware issue at the moment.  Any pointers would be most appreciated! 

I seem to be able to write and read from the flash ok from what I can tell.