The problem was caused by the addition of the Unit Test package to the project. To ensure that the tests were built and run with the main project, I dragged the unit test target group to the main goal project. By default, he assigned the Unit Test kit, which will be created against the iPhone Device 3.1.2 SDK, not the simulator. In addition, a unit-generated .plist file was created in the Unit Test package containing the default Bundle identifier for com.yourcompany ... etc. Therefore, despite indicating the target, which, as I knew, had a default SDK for iPhone Simulator 3.1.2, the inclusion of the Unit Test package led to the fact that the error continued to appear. Selecting Get Info for Unit Test, select the Build tab and install the base SDK on iPhone Simulator 3.1.2, and everything will be fine.
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