Steps to reproduce:

1. Create a new Unity project using the Universal 2D template
2. Enable AI in the customizable toolbar (Customizable toolbar > Services > AI)
3. Click on the AI button and select "Agree and install Unity AI"
4. Open the Profiler window (Window > Analysis > Profiler)
5. Dock the Profiler window
6. Enter Play Mode to record some data for the Profiler window
7. Select any frame in the Profiler window
8. Click the "Ask Assistant" button
9. Right-click the Profiler Data and select "Remove"
10. Observe the Console window

Actual results: The Profiler Data is not removed and a "NullReferenceException: Object reference not set to an instance of an object" error is thrown

Expected results: The Profiler data is removed and no errors are thrown

Reproducible with versions: 6000.4.0f1, 6000.5.0a9, 6000.6.0a1

Can’t test with versions: 6000.0.71f1, 6000.3.11f1 (due to no Ask Assistant functionality)

Tested on (OS): MacOS Silicon Tahoe 26.3