Leaving a partt you created.. How?

[SamSmoot]

in the party member option right click on that person's name and click on promote. THen should be able to leave the party

If you mean the on screen party list, it errors when I try to promote.

Update: Google found an earlier thread here with a possible answer. It said if you have a party finder running, you can't pass lead. (The error message doesn't tell you that's why it failed.) I'll try ending the PF first next time. (And notify the new lead to restart it..)