Nvidia shield android market unknown error -24

[milkydude12]

Everytime i try to install ppsspp (free version) it refuses to install, however when i attempt to install the paid version it works (i uninstalled it and refunded soon after), this is not the only app that does this, file manager also does this (either refuses to install from the play store and gives me an unknown error -24 or when i try to use a apk it just refuses to install) If i can't get this to work i'll sadly have to return my Nvidia shield.

Thanks

[livisor]

Maybe you have to enable installing apps from unknown sources.
http://www.labnol.org/tech/install-apk-o...oid/19885/

[milkydude12]

It's already enabled, the problem has been resolved ( i got another nvidia shield via the warranty)