I was browsing with the official Facebook app and when sending a picture to a friend I used SkyDrive as the folder where to choose my files from. Then I accidentally made it the default folder. So now, whenever I want to send an image, the app always directs me to SkyDrive instead of getting it from the phone's gallery.
I already tried resetting to defaults and deleting the data of the app, but that didn't work. That's why I think it might be a phone-wide setting. I just can't seem to figure it out.
Phone is a Desire X, running Android 4.1.1.