Uniphy Platform Designer Error: "Cannot find sequencer/sequencer.elf"

Here are some helpful links I've uncovered from others on the issue. However, even after carefully following the instructions contained in these links, I am still having the same problem.

https://www.terasic.com.tw/wiki/Getting_Start_Install_WSL

https://wiki.trenz-electronic.de/display/PD/Install+Intel+Development+Tools

https://medium.com/@jpablo.pinilla/intel-quartus-19-1-university-program-extensions-and-nios-ii-command-shell-for-windows-10-8a37182fc07b

You can refer to below.

https://www.intel.com/content/www/us/en/support/programmable/articles/000086438.html

Thank you for your response.

However, I have installed/removed/reinstalled Ubunto 18.04 and WSL while carefully following the instructions in the support article you mentioned as well as the more thorough Terasic article I mention above.

I am able to run Nios II Command Shell by itself from the Start menu. It recognizes typed commands as expected.

I have verified that the WSL is set to version 1.

I have verified the Environment variables are pointing to the correct locations:

• QUARTUS_ROOTDIR C:\intelFPGA\21.1\quartus
• QSYS_ROOTDIR C:\intelFPGA\21.1\quartus\sopc_builder\bin
• SOPC_KIT_NIOS2 C:\intelFPGA\21.1\nios2eds

I am still receiving the same errors as mentioned earlier.

Is there a means to interrupt the flow to just prior to the error occurring to see what the state of the machine is at that point?

Correct. I had already done the steps shown in the link you posted. The Terasic article is actually more detailed than the one you posted. Even after carefully going through all of the steps described in the articles, I am still getting the same error as originally mentioned.

I am able to successfully run Nios II Command Shell from the Start Menu (even not as an Administrator). See below. However, I am still getting the "Cannot find sequencer/sequencer.elf" error when attempting to compile my DDR3 Platform Designer project.

Thanks for posting this thorough problem report.

I am also running Quartus Prime Std 21.1.0.842, tries to generate a design with a DDR3 controller, and thereby get the exact same error.

I have also tried the suggestions given in this topic, which unfortunately have not fixed the problem.

A solution i greatly appreciated, since it blocks use of Quartus Prime Std 21.1 for the design.

Installation of WSL (Windows Subsystem for Linux) breaks the Quartus lite 18.1 Platform Designer so it is not possible to generate code with the DDR3 controller, even through WSL is not expected to be used for Quartus 18.1.

The error messages are similar to those given in Quartus 21.1 shown above.

When I disable WSL and restarts Windows, then the Quartus lite 18.1 Platform Designer can again generate code with the DDR3 controller.

Yes. In my opening paragraph of this forum post I said,

Prior to Quartus Prime Std v19, Intel used Cygwin for the Nios II Command Shell. Version 19.1 and beyond, they switched to using Ubunto 18.04 TLS and Windows Subsystem for Linux (WSL) to operate the Nios Command Shell. Here's a quote from the following support article.

https://www.intel.com/content/www/us/en/support/programmable/articles/000074066.html

"Starting with the Nios® II EDS in the Intel® Quartus® Prime Pro Edition software version 19.2 and Intel® Quartus® Prime Standard Edition software version 19.1, the Cygwin component in the Windows* version of Nios II EDS has been removed and replaced with WSL."

So, prior to Quartus v19, the Platform Designer used Cygwin instead of WSL to run the Nios Shell used to generate the projects.

I had an online meeting with a couple support engineers at Intel regarding this topic. It appears they concur this is potentially a bug and they have generated a HSD (whatever that is) and submitted to Intel Engineering for review/follow-up. Time to watch some paint dry.

For now, I am reverting to Quartus Prime Std v18.1 so I can continue to work my project.

Do you mean you are able to open the link below and tried it, but it failed?

https://www.intel.com/content/www/us/en/support/programmable/articles/000086438.html

Sounds good that engineering will looks into this.

Please note the probably related issue in https://community.intel.com/t5/Programmable-Devices/Quartus-18-1-Lite-Platform-Designer-DDR3-Controller-can-t-build/m-p/1339839#M82242