Hi Sasha ,
I suspected the newer version of RTSC/XDCtools in CCS v5.5 .So, i uninstalled all the XDCtools version as root . Also i uninstalled all the MCSDK packages and other updated packages one by one as root .
After uninstalling all updated package - i re-installed CCS v5.5 . The issue was cleared this time . I could find my
target file and RTSC platforms in list .
Thank you ,
with regards ,
Vinodh