I’m having trouble uploading my iOS App v2.5 Album files to Facebook.
Facebook video files can be a max of 100MB. Photos can not be larger than 4MB. V2.5 of the iOS App has a 4MB file limit for upload to Facebook. Larger files can be saved to the iOS library and uploaded to Facebook using the Facebook App. An update later in summer 2012 will correct this limitation of the ION App.