"The iPad/iPhone cannot be synced because it cannot be read from or written to"
Since updating to iOS 7.0.2, when syncing my ipad and my iphone I get the message, "The ipad/phone cannot be synced because it cannot be read from or written to." When I deselect all photos from being synced to my devices, the message no longer appears. This tells me the problem is obviously related to iphoto. Reading a few forums on this matter tells me the solution has something to do with emptying a photo cache, deleting photos, then reimporting; everything is rather vague. I always empty trash in iphoto, then I secure empty trash in finder, then I erase free disc space in disc utility. What exact steps must I take so that itunes will once again sync all images from iphoto onto both my ipad and iphone?
iPad 3G, iOS 7.0.2