Troubleshooting

Eclipse won't start — or the "AI Peon" view is blank — after installing an older Peon AI

Old Peon AI builds (before 2026-10) accidentally shipped parts of the Eclipse platform itself in the update site. If you installed such a build on an Eclipse older than the platform it was built for, two orphan bundles can stay behind and keep breaking the IDE even after Peon AI is uninstalled:

• Eclipse does not start. The log shows a Uses constraint violation involving org.objectweb.asm versions 9.9.1 and 9.10.1, ending with Application "org.eclipse.ui.ide.workbench" could not be found in the registry.
• Eclipse starts, but the AI Peon view is blank. Nothing is logged.

The culprits are leftover org.objectweb.asm 9.10.1 and jakarta.annotation-api 3.0.0 bundles.

Quick fix

1. Close Eclipse completely (make sure no eclipse.exe / javaw.exe is running).
2. In your Eclipse plugins folder, delete these files (skip any that are absent):
   • org.objectweb.asm_9.10.1.jar
   • org.objectweb.asm.tree_9.10.1.jar
   • org.objectweb.asm.tree.analysis_9.10.1.jar
   • org.objectweb.asm.util_9.10.1.jar
   • org.objectweb.asm.commons_9.10.1.jar
   • jakarta.annotation-api_3.0.0.jar
3. Open configuration/org.eclipse.equinox.simpleconfigurator/bundles.info and delete every line that starts with one of those bundle names followed by ,9.10.1, or ,3.0.0,.
4. Start Eclipse once with a clean cache: eclipse.exe -clean -clearPersistedState
5. Install the current Peon AI from the up-to-date update site. Under Available Software Sites, remove any old Peon AI site so it cannot be used again.

A ready-to-run PowerShell script does steps 2–3 for you (with backups): see docs/clear-stale-platform-bundles.ps1 in the repository.

# preview, then apply (point -EclipseHome at the folder containing eclipse.exe)
powershell -ExecutionPolicy Bypass -File .\clear-stale-platform-bundles.ps1 -EclipseHome "C:\eclipse" -DryRun
powershell -ExecutionPolicy Bypass -File .\clear-stale-platform-bundles.ps1 -EclipseHome "C:\eclipse"

The current Peon AI build only ships the Peon AI plugin, so this cannot happen again.

The view is named "AI Peon", not "AI Chat"

In Window > Show View > Other…, search for Peon or expand the AI category. The view's label is AI Peon.