In the menu! You don't need to open the options panel to generate a pseudo bug-report for display: Help->Generate error
This will open a "Internal error" alert that you can consult with the second button.
The whole report is in the white scrollable area, which is selectable (you can copy from it).
Then click OK to close it, and finally "Reject" in the first screen to ignore the report (don't need to send it to LimeWire, as it's a faked error, but not a bug in the software).