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

You are using Xcode GM which is under beta stage. Use latest Xcode 5.1.1 available. Also, these error occur while switching between simulator (32 bit and 64 bit).

1. Quit the simulator and re-build the application. OR
2. Reset simulator from "iOS simulator" -> "Reset content and settings.."