Since upgrading to Unity 5.5.2f1, I have been unable to submit my app to the App Store. When submitting, I get two errors about missing icon files from the CFBundleIcons entry (size 29x29 and 40x40). This did not happen with Unity 5.5.1.
I tried on Unity 5.5.2p1 and the problem still persists.
I tried resetting the icons in the Unity project and specifically overriding the iOS icons but to no avail.
Only solution was to use an online service to generate all possible icon sizes from a template of 1024x1024 and overwrite the AppIconSet folder manually.
Anyone else experienced this? I googled anything I could imagine but did not see any reports on this yet.