Hi, i had a pod hd500 for 1,5 years, but it broke so i got a new one. Anyway when i click the looper button, the looper screen dosent come up, and the pre/post button blinks so i can toggle between pre and post looping. When i have set it to post, i still cant open the looper (i can loop stuf, but i just see the normal amp screen). Any tips?