Failed to Install (File I/O Error) installing package
Assuming you've already repeatedly tried to force install the package:
Check that there is not a version of the app already installed that MobiControl does not see. (i.e. the APK was manually installed)
If that's the case manually uninstall (you may need to disable security profiles to allow removal) then try force reinstall the package.
What version of MobiControl client and Android are you working with?