I second Martin's question from comment #2: when barry tried to add ~canonical to ~private-launchpad-strategy, he got this error as well.
See also bug #95193 ("Unhelpful error message adding team A as a member of team B when team B is already member of team A"), which has a similar symptom but a different cause.
I second Martin's question from comment #2: when barry tried to add ~canonical to ~private- launchpad- strategy, he got this error as well.
See also bug #95193 ("Unhelpful error message adding team A as a member of team B when team B is already member of team A"), which has a similar symptom but a different cause.