Notification error on iPhoto
I've got a Mac Book Pro with retina display (13.3/2.6/8GB/256GB Flash), OS X Yosemite Version 10.10 and iPhoto 9.6.
My iPhoto keeps insisting that there is a new photo on a Photo Stream that I've subscribed to, even though there's nothing new there. The red notification blob on the icon or the "1" next to "iCloud" on the iPhoto menu won't go away no matter how many times I revisit the said Photo Stream, quit the app or restart the entire Mac.
The Photos app on my phone (iPhone 4S, which is on the verge of death btw) is naturally connected to the same Photo Stream but on this device everything works fine and there is no notification error.
It would be great if someone could help. As minor as this is, I'm very irritated.
Thanks.
MacBook Pro with Retina display, OS X Yosemite (10.10)