Hi Manibha:
Could you clarify what IDE you are using? I would recommend you use version 10.2.1
For the exist issue, I guess maybe you have installed this package before.
Please open the default location to check it, for example, in my PC, the default is
C:\Users\[XXYY]\mcuxpresso\01\SDKPackages
You can delete it and try it again
Regards
Daniel
