BBB - Failed to load ubldr

U-Boot SPL 2017.01-rc3 (Jul 16 2017 - 16:45:40)
Trying to boot from MMC1MMC partition switch failed
*** Warning - MMC partition switch failed, using default environment

reading u-boot.img
reading u-boot.img


U-Boot 2017.01-rc3 (Jul 16 2017 - 16:45:40 -0700)

CPU  : AM335X-GP rev 2.1
I2C:   ready
DRAM:  512 MiB
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
*** Warning - bad CRC, using default environment

<ethaddr> not set. Validating first E-fuse MAC
Net:   cpsw, usb_ether
Press SPACE to abort autoboot in 2 seconds
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
** Unable to read file uEnv.txt **
switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...
reading /am335x-boneblack.dtb
66553 bytes read in 11 ms (5.8 MiB/s)
Found FreeBSD U-Boot Loader (elf)
reading ubldr
299141 bytes read in 24 ms (11.9 MiB/s)
data abort
pc : [<9ff5134c>]          lr : [<1b00001c>]
reloc pc : [<8080134c>]    lr : [<fb8b001c>]
sp : 9df2f1c4  ip : 10811000     fp : 00000002
r10: 9ff9fc2c  r9 : 9df2fed8     r8 : e3310000
r7 : e59f1028  r6 : e04c0000     r5 : e59c0000  r4 : e28fc030
r3 : e92d4003  r2 : 0002fef8     r1 : 820000b8  r0 : 01000098
Flags: nzCv  IRQs off  FIQs on  Mode SVC_32
Resetting CPU ...

resetting ...