Iphoto is not upgrading
Ever since I updated my Macbook Pro to Yosemite, my Iphoto will not upgrade. There is a sign across my iphoto and then it tells me to upgrade. When I go on appstore and try to update it, it won't update. It's been 3 weeks and I haven't found any way for it to update. How can I fix this? Yosemite is extremely annoying me now! I can't update my iphoto nor my imovie. Does anyone know how I can fix this?
MacBook Pro, OS X Yosemite (10.10.2)