dyld: dyld_sim is not compatible with the loaded process, likely due to architecture mismatch Posted by Gerard Grundy Date January 31, 2020 Comments 0 comment These are the things I did to get the project to work due to this error. Related Tag:troubleshooting, Xcode programming Share: Gerard Grundy Previous post Compiling IB documents for earlier than iOS 7 is no longer supported January 31, 2020 Next post Compound Assignment Operator Swift 5.1 January 31, 2020 You may also like Compiling IB documents for earlier than iOS 7 is no longer supported January 31, 2020 Select the IB interface. Then: Make sure Build for is above the required level.