You do not need to rebuild everything (e.g all). You should have just rebuild the NDK (e.g. gmake -f tirtos.mak ndk).
Can you delete you ti-rtos installation and re-install it? You can get the installer here: http://software-dl.ti.com/dsps/dsps_public_sw/sdo_sb/targetcontent/tirtos/index.html
Also, be in the c:\ti\tirtos_tivac_2_00_02_36 directory when you run the gmake. That might be part of the problem. I'll try rebuilding "all" here to see what the issue is. It's part of our regression testing, so I'm surprised it failed.
Todd