CCSTUDIO-THEIA: CCS v21 cannot install codex (openai) extension

Part Number: CCSTUDIO-THEIA

As the snapshot shows, it stuck in installing without any progress.

Can you help?

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  • After:
    1. set correct proxy address and port in CCS.

    2. download and manually install Codex - OpenAI's coding agent v26.825.51511

    Codex works for me in my C2000 project. It creates project, coding, compling and generating .out by itself.

    The main point is that Codex extention in CCS extension management which version is v26.810.xxxxx seems not correctly working.

  • I also ran into the same problem as you. How did you solve it? Also, after I used "Get Started with AI" to download Codex, its version was very old, and after I installed it, it didn't work — it showed "Codex couldn't load its resources."

  • Hi Stephen,

    What version of the extension was installed? I just tried it out now with the same version as as  and it worked for me too.

    Thanks

    ki

  • Hi Ki,the codex version is v26.5730.61309,and I don't know how to update the codex extension? it still doesn't work? How should I do?

    "Why is there no update button for the Codex plugin when I search for it in my CCS extensions? I noticed that Claude Code has one. Is it because I'm on Windows 11 and CCS v21.0.1?"

    Thanks
    M Alex
  • Hi Ki,the codex version is v26.5730.61309

    That is a newer version. Is that not working for you? I see on Windows, Codex extension version sees to lag behind Windows. However I did see 26.5810 available on Windows today. Can you give that version a try?

    Thanks

    ki

  • Hi Ki,

    I can now successfully use the Codex plugin, and I think I've found the root of the problem. Because I need a VPN to access my ChatGPT subscription, but I was previously using system proxy mode. Codex requires TUN mode to work. As for the version issue, the latest Codex version on the Open VSX Registry is v26.5825.51511, but it's only available for macOS and Linux. The latest version that supports Windows is v26.5730.61309 (which may be why you can use the latest version—maybe you're on a Mac). However, the Codex plugin for VS Code can still be used. So I think this is probably an issue on OpenAI's side—they haven't fixed the compatibility problem with the Codex plugin on Windows (according to ChatGPT).

    Thanks

    M Alex