Error: (vsim-7) Failed to open VHDL file "../onchip_memory_0.hex" in rb mode. No such file or directory. (errno = ENOENT)

Description

This problem has been fixed in Quartus® II 6.0 (SOPC Builder 6.0).

You may receive this error message when simulating a VHDL SOPC Builder 5.1 (or earlier) design in the ModelSim® tool if you changed the name of the on-chip memory peripheral.  To get around the error message, open the wizard for the on-chip memory and click Finish.  This updates the <SOPC Builder system>.ptf file with the new initialization file name.