Is HP SDHC L1878a a bootable SDHC for beagleboard


I have a HP SDHC L1878a 4 GB card, with MLO, xloader, uboot-flash,
uboot, and uimage as per teh documentation, and the Board is not
booting from the SDHC card.. it always foes to NAND, and dince i
erased NAND, i get teh following message

Texas Instruments X-Loader 1.4.2 (Feb 19 2009 - 12:01:24)
Reading boot sector
Loading u-boot.bin from nand

and teh beagle board hangs..

Any pointes will be appreciated