How to register?

[kind chasm]

lane task error: lane=main durationMs=96 error="Error: Context engine "lossless-claw" is not registered. Available engines: legacy"

[west marten]

That error usually means your config is pointing at contextEngine: "lossless-claw", but that engine plugin never got loaded, so only the built-in legacy engine exists.

First, can you paste:

openclaw --version
openclaw plugins inspect lossless-claw
openclaw plugins doctor

Likely fix:

openclaw plugins install @martian-engineering/lossless-claw
openclaw plugins enable lossless-claw
openclaw gateway restart

And make sure your config looks like this:

{
  plugins: {
    slots: {
      contextEngine: "lossless-claw"
    },
    entries: {
      "lossless-claw": {
        enabled: true
      }
    }
  }
}

Important: the slot value must match the engine's registered id exactly, not just the npm package name.

If you just want to get unstuck immediately, set it back to legacy for now:

plugins: {
  slots: {
    contextEngine: "legacy"
  }
}

Docs:

• https://docs.openclaw.ai/concepts/context-engine
• https://docs.openclaw.ai/cli/plugins

If you paste the 3 command outputs above, I can tell you exactly which part is missing.

[kind chasm]

During update I got duplicate, seems it might have broken the system then how do I fix this?

[west marten]

Yeah, that sounds recoverable, not permanently broken.

What likely happened is one of these:

• the update left two plugin records / paths
• lossless-claw is selected in config, but the plugin is now disabled / missing
• the slot points at lossless-claw, but only legacy is actually loaded

I’d fix it like this:

openclaw --version
openclaw plugins doctor
openclaw plugins list --verbose
openclaw plugins inspect lossless-claw

If that shows duplicate/odd plugin state, do a clean reset of just that plugin:

openclaw plugins uninstall lossless-claw
openclaw plugins install @martian-engineering/lossless-claw
openclaw plugins enable lossless-claw
openclaw gateway restart

And make sure config ends up like:

{
  plugins: {
    slots: {
      contextEngine: "lossless-claw"

    },
    entries: {
      "lossless-claw": {
        enabled: true
      }
    }
  }
}

If you want the fastest temporary recovery, switch back to builtin first:

plugins: {
  slots: {

    contextEngine: "legacy"
  }
}

Then restart the gateway. That should get the system responding again while you clean up lossless-claw.

One extra gotcha: if you previously used a linked/local plugin path, the duplicate may be coming from plugins.load.paths, not just the installed package. openclaw plugins doctor usually calls that out.

Paste the outputs from these 4 commands and I can tell you the exact cleanup path:

• openclaw --version
• openclaw plugins doctor
• openclaw plugins list --verbose
• openclaw plugins inspect lossless-claw

Docs:

• https://docs.openclaw.ai/concepts/context-engine
• https://docs.openclaw.ai/cli/plugins

If this fixes it, please right-click the solution message → Apps → ✅ Mark Solution, so Answer Overflow can index it.

[kind chasm]

Yes have, went back to legacy and made openclaw to fix it