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Usually to use TelerikUI for iOS in your project you should refer the TelerikUI.framework from the installation folder. If you are creating an App Extension, however, you should use the embedded frameworks. In the embedded
folder, there are two embedded frameworks for debug and release version. The debug version contains simulator and device symbols while the release version contains only device symbols. It seems that the issue is caused because you are trying to run the app on simulator using the release version of the embedded frameworks. If you use the debug version the issue should be solved.
I hope this helps. If you need further assistance, do not hesitate to contact us.
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