sharing problem

Hi. I'm trying to share an app from my pc (Windows 7) to my wife's ipad mini so I can test it out. I went through the sharing procedures OK. I downloaded Interactplayer from the Apple appstore. (When I open IP it tells me there's an update to IP but it's the same one I downloaded) When I tap the "get my apps" button on the IP screen it brings up a pop up box showing the app I'm trying to send. I hit download and the download progress bar appears, but 3 seconds later IP disappears altogether and I have to restart it. Is this a bug??
--Mark