Exception: Invalid PBX project (parsing line 779)

Hola. Cuando quiero crear los archivos correspondientes para iOS en Unity, me genera el siguiente error. ¿Alguien conocerá alguna posible solución? o ¿qué es lo que ocasiona esta falla? Al momento de compilar en Xcode (probé en una versión anterior, es decir 7.1, debido a que leí no había soporte para la última versión de XCode) me marca muchos errores y no me permite compilar, así como también, antes de actualizar unity no me generaba el ipa. Mi versión de Uniity es 5.3.4

Exception: Invalid PBX project (parsing line 779) UnityEditor.iOS.Xcode.PBX.Parser.ParseKeyValue () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:149) UnityEditor.iOS.Xcode.PBX.Parser.ParseTree () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:120) UnityEditor.iOS.Xcode.PBX.Parser.ParseValue () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:164) UnityEditor.iOS.Xcode.PBX.Parser.ParseKeyValue () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:152) UnityEditor.iOS.Xcode.PBX.Parser.ParseTree () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:120) UnityEditor.iOS.Xcode.PBX.Parser.ParseValue () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:164) UnityEditor.iOS.Xcode.PBX.Parser.ParseKeyValue () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:152) UnityEditor.iOS.Xcode.PBX.Parser.ParseTree () (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBX/Parser.cs:120) UnityEditor.iOS.Xcode.PBXProjectData.ParseContent (System.String content) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBXProjectData.cs:451) UnityEditor.iOS.Xcode.PBXProjectData.ReadFromStream (System.IO.TextReader sr) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBXProjectData.cs:458) UnityEditor.iOS.Xcode.PBXProject.ReadFromStream (System.IO.TextReader sr) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBXProject.cs:868) UnityEditor.iOS.Xcode.PBXProject.ReadFromString (System.String src) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBXProject.cs:863) UnityEditor.iOS.Xcode.PBXProject.ReadFromFile (System.String path) (at /Users/builduser/buildslave/unity/build/PlatformDependent/iPhonePlayer/Extensions/XCode/PBXProject.cs:857) UnityEditorInternal.Advertisements.UnityAdsPostprocessor.EditXcodeProject (System.String buildFolder) (at C:/buildslave/unity/build/Extensions/UnityAds/UnityAdsEditor/UnityAdsPostprocessor.cs:104) UnityEditorInternal.Advertisements.UnityAdsPostprocessor.PostProcessBuild_iOS (BuildTarget target, System.String path) (at C:/buildslave/unity/build/Extensions/UnityAds/UnityAdsEditor/UnityAdsPostprocessor.cs:96) UnityEditor.HostView:OnGUI()