Check if you have enabled installing packages from unknown sources . If you have then try installing from a file manager . I get that message everytime I try to install an apk from my status bar , but if I download a file manager , navigate to the download manager , and install manually from there , I get no issues . Why ? I don ' t know . Maybe one of those beta things . But , navigating using file manager fixes it for me . <| sep |> It is if you have at least 500 k to start with . <| sep |> Man I bought EU 4 after loving CK 2 but I couldn ' t figure out how to play it properly . The economics of it went right over my head . Hope you catch on better than I did ! <| sep |> When is your due date ? If you ' re at 8 months now , by Christmas you ' ll either be ready to go any minute , or you ' ll have a brand new baby , right ? Those sound like two very convincing excuses to get yourself out of any and all Christmas obligations you don ' t feel like attending !