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Errors in CCS4 when building UBL

I am trying learn how to recompile the UBL for DM355 so that I can start 'tweaking' it to fit my hardware configuration.

To import the project I copied the flash_utils folder to a temp folder on my computer and imported "UBL_NAND.pjt" project from "flash_utils\DM35x_Rev_C\CCS\UBL" folder.

I get two error messages during UBL 'Build All':

errors encountered during linking; "C:/pub/pub/flash_utils/DM35x_Rev_C/CCS/UBL/NAND/UBL_DM355_NAND_216.out" not built        UBL_NAND    line 0    1286828249859    76
unresolved symbol __TI_zero_init        UBL_NAND    line 0    1286828249859    74

The Console window has the following output:

<Linking>
warning: creating output section ".cinit" without a SECTIONS specification

 undefined      first referenced
  symbol            in file    
 ---------      ----------------
 __TI_zero_init                

error: unresolved symbols remain
warning: entry-point symbol other than "_c_int00" specified:  "boot"
error: errors encountered during linking;
   "C:/pub/pub/flash_utils/DM35x_Rev_C/CCS/UBL/NAND/UBL_DM355_NAND_216.out" not
   built

>> Compilation failure
C:\Program Files\Texas Instruments\ccsv4\utils\gmake\gmake: *** [C:/pub/pub/flash_utils/DM35x_Rev_C/CCS/UBL/NAND/UBL_DM355_NAND_216.out] Error 1
C:\Program Files\Texas Instruments\ccsv4\utils\gmake\gmake: Target `all' not remade because of errors.
Build complete for project UBL_NAND

What am I doing wrong?