Yes, that's what I believe too, that the "read design" must be having a switch!
You see in my 1st post, I am already using the switch " -verilog2k " but that dosen't solve the problem.
I have checked the Conformal_Ref.pdf documentation for all switches belonging to the cmd "read design", but couldn't find it there.
Also it is no use changing an Error to a Warning! Coz if my script cannot parse the design file, it is no use running the constraint.
I am using CCD for the 1st time & have no experience!