Pohot paper jamming in Brother DCP-115C printer (by 2 users)

I bought my printer 6 months ago and have had no dramas until I started printing photos. I have 230gsm glossy paper (this printer is supposed to take up to 240gsm). It printed a couple of sheets yesterday but today it just keeps jamming. It doesn't seem to want to feed the paper around the loop in the back of the printer. I hve tried single sheets and putting in multiples. It is fine with normal paper - it's just the photo paper that is a problem.