I've seen the same message recently on both my S4 and my Note 8. Seems to be just recently happening but everything seems to install fine and operate correctly so I've just been ignoring it for now.
Phones & Tablets: Galaxy S4, Galaxy Note 8", Evo 4g LTE, Evo 3D, Acer Iconia A500, Samsung Galaxy Tab 2 10.1, Ipad 2, Nabi 2,
Rom: Rooted Stock for now, Hotspot Mod, Xposed, Wanum
Kernel: Stock for now