I AM SO SMART AND HAPPY YOU WILL BE HAPPY TO THAT YOU CAN FINISH THE GUILD!!!!!!

Ok as you know erikur is under water and you,can't talk to him but NOT FOR LONG!!!!!!!,!,!,

Step 1- get Serana to make you a vamplord and get vampiric grip.

Step 2- go under solitude ther is a glitched roof if know we're it is.

Step 3- become a vamp lord and go over erikur.

Step 4- use vampiric grip on erikur until you throw him out of water.

Step 5- become reverent form (normal) and use calm spell on erikur

Step 6- talk to erikur and complete the dainty sload quest.

Step 7- finally the last step is thank me for the success I was just so happy it works when I did it

Ps. I found this out by myself!!!!!!!!!!!