.SPD file generation

[Altera_Forum]

I am trying to run the RTL simulation tool through Quartus Prime Standard Edition. 

 But it gives me following error in the nativelink_simulation.rpt  -----------------------------------------------------------------------------------------------------------------------------------------------------   Info: Start Nativelink Simulation process executing command line: ip-make-simscript --nativelink-mode --output-directory=abcd_iputf_input --spd=C:/projects/abcd_restored/abcd1.spd --spd=C:/projects/abcd_restored/abcd2.spd --spd=C:/projects/abcd_restored/abcd3.spd --spd=C:/projects/abcd_restored/abcd4.spd --spd=C:/projects/abcd_restored/abcd5.spd --spd=C:/projects/abcd_restored/abcd6.spd  Error: You did not generate the simulation model files or you generated the IP file using an older version of MegaCore which is not supported by RTL NativeLink Simulation Error: Regenerate the IP and simulation model files using the latest version of MegaCore for RTL NativeLink Simulation flow to function correctly Error: NativeLink simulation flow was NOT successful       ================The following additional information is provided to help identify the cause of error while running nativelink scripts================= Nativelink TCL script failed with errorCode: NONE Nativelink TCL script failed with errorInfo: Regenerate the IP and simulation model files using the latest version of MegaCore for RTL NativeLink Simulation flow to function correctly  (procedure "get_ip_info" line 1)  invoked from within "get_ip_info $full_file_name"  (procedure "run_eda_simulation_tool" line 195)  invoked from within "run_eda_simulation_tool eda_opts_hash"  -----------------------------------------------------------------------------------------------------------------------------------------  I have regenerated the IP and Simulation Models successfully . All files were updated except the .spd files. I hope i could get some insight on how to regenerate the .spd files  Thank you