TMDSLCDK6748 win7 64位下编译，出现以下问题，请问如何解决？

**** Build of configuration Debug for project facedetect_lcdk ****
C:ticcsv5utilsbingmake -k all
'Building file: ../facedetect_lcdk.cfg'
'Invoking: XDCtools'
"C:/Program Files (x86)/Texas Instruments/xdctools_3_23_00_32/xs" --xdcpath="C:/Program Files (x86)/Texas Instruments/bios_6_33_01_25/packages;C:/ti/ccsv5/ccs_base;" xdc.tools.configuro -o configPkg -t ti.targets.elf.C674 -p ti.platforms.evm6748 -r debug -c "C:/ti/ccsv5/tools/compiler/c6000_7.3.4" --compileOptions "-g --optimize_with_debug" "../facedetect_lcdk.cfg"
C:/Program Files (x86)/Texas Instruments/xdctools_3_23_00_32packagesxdcbldxdc.mak:235: *** can't find specified XDCROOT: C:/Program Files (x86)/Texas Instruments/xdctools_3_23_00_32. Stop.
js: "C:/Program Files (x86)/Texas Instruments/xdctools_3_23_00_32/packages/xdc/tools/Cmdr.xs", line 51: Error: xdc.tools.configuro: configuration failed due to earlier errors (status = 2); 'linker.cmd' deleted.
gmake: *** [configPkg/compiler.opt] Error 1
gmake: Target `all' not remade because of errors.
**** Build Finished ****