I can't delete photos from photostream
I'm totally freaking out because I have some really BAD photos on my photostream. I don't even know how they got there. I deleted them from my computer soon after uploading them and I deleted them from my camera, but when I try to delete them from my photostream by selecting a photo and then hitting "delete" I just get an error beep. No message, no disappearring photo, nothing. What is wrong? I don't have any other photostream enabled devices.
MacBook Pro (13-inch Late 2011)