Error compiling reference design for DDR2 controller for DE3 board..

Hey guys,

i was trying to compile the reference design for ddr2 controller provided in the terasic CD for DE3 and i ma getting the following error:

Error: Can't find valid feature line for core Terasic_DE3_Regulator_Controller (535C_000C) in current license

Error (10003): Can't open encrypted VHDL or Verilog HDL file "C:/Desktop/ECE_636/DE3_demonstrations_V10/DE3_150/DE3_150_DDR2_1G_2RANK/iov_a3v3_b1v8_c3v3_d3v3.v" -- current license file does not contain a valid license for encrypted file.

Any help is highly appreciated.

Many Thanks.

regards,

-M