I accepted the Slave Trader quest from the Viscount and travelled to their location. I started the dialogue and initiated combat when given the option. I killed all of them and when the last one died I was asked if I wanted to escort the children back to Verbobonc. I said yes and was transported to the City Jail. I tried talking to the Viscount and others and no option was given to report that I had rescued the children and the quest is still showing as accepted and not completed even though I have killed all of the slavers. What do I need to do in order to complete the quest? I do have a full party, so am not sure if that is what the problem is. Thanks for all of your hard work on the mudpack.
Did you by any chance charm one of the slavers? All of the slavers must be dead for the quest to complete.
Are you using the 8.0.1 patch? Absalom's dialogue was bugged in the 8.0.0 module but the patch fixes it.