Xcode 5 - “iOS Simulator failed to install application” every time I switch simulators

Question

Using Xcode 5 GM, anytime I switch to the 5.1, 6.0 or 6.1 simulators to test, I get the error \"iOS Simulator failed to install application.\" When I reset the simulator it

Answer 1

Deleting the app in the simulator works for me. just wanted to add that this happen only if I open xib that created in xcode 4.6 If it's other files, this not happen