When using Windows 10 and generating the Intel® Stratix® IV UniPHY DDR2 IP in the Intel Quartus® Prime Platform Designer, you may see a similar error as shown below.
Error: Cannot find sequencer.elf
This error may be due to a conflict when the Windows Subsystem for Linux is enabled in Windows 10.
In the Windows Control Panel > Programs > Programs And Features > Turn Windows features on or off, unselect the parameter : Windows Subsystem for Linux.
Reboot the PC, open the Intel Quartus Prime project and regenerate the UniPHY DDR2 IP.
This problem is scheduled to be fixed in a future version of the Intel Quartus Prime software.