When group is "Normal" instead of "Passing through" can't save as it stops at "saving 0%".
Have you tried restarting, or deleting Preferences. Or perhaps it's something else about your file? You don't say what OS you're running, or if you're running the latest version of PS—2015.1.2. I've used Normal instead of Pass Through a few times since you posted, and I don't see a problem with my files. I have a Mac running Yosemite.