iPhone app could not be installed at this time

Question

i was trying to install my iphone application from testflight. it installs perfectly on few devices but in some after installing about 80 percent it gives an error \"Unable to d

Answer 1

I was also having this problem, with an Ad-Hoc iPad application, when trying to install it on a iOS 6 device.

What fixed it for me was to click on the project in XCode, and change the "iOS Deployment Target" setting from 5.1 to 6.0.

And there was silly me thinking that iOS 5.1 apps would run on a iOS 6.0 device.