Duality macos bug

[Core] Msg: Running DualityLauncher with flags:
[Core] Msg: Using 'DefaultPluginLoader' to load plugins.
[Core] Msg: Environment Info:
              Current Directory: /Users/Sebastien/Desktop/LD37-2
              Command Line: /Users/Sebastien/Desktop/LD37-2/DualityLauncher.exe
              Operating System: Unix 15.6.0.0
              64 Bit OS: True
              64 Bit Process: False
              CLR Version: 4.0.30319.42000
              Processor Count: 4
[Core] Msg: Currently Loaded Assemblies:
              mscorlib 4.0.0.0
              DualityLauncher 2.3.2.0
              Duality 2.12.2.0
              System.Runtime 4.1.0.0
              System.Core 4.0.0.0
              System.IO 4.1.0.0
              System.Collections 4.0.10.0
              System.Reflection 4.1.0.0
              System.Runtime.InteropServices 4.1.0.0
              System.Linq 4.1.0.0
              DualityPrimitives 2.0.4.0
              FarseerDuality 4.1.4.0
              System.Runtime.Extensions 4.1.0.0
              System.Globalization 4.0.10.0
              System 4.0.0.0
              System.Resources.ResourceManager 4.0.0.0
              System.Diagnostics.Debug 4.0.10.0
[Core] Msg: Plugin Base Directories:
[Core] Msg: Available Assembly Paths:
[Core] Msg: Assembly loaded: System.Threading 4.0.10.0
[Core] Msg: Scanning for core plugins...
[Core] Msg: Initializing ISystemBackend...
[Core] Msg:   Assembly loaded: System.Text.RegularExpressions 4.1.0.0
[Core] Msg:   Assembly loaded: NVorbis 0.7.5.0
[Core] Msg:   Assembly loaded: System.Runtime 4.1.0.0
[Core] Msg:   Assembly loaded: System.Xml.XDocument 4.0.10.0
[Core] Msg:   Assembly loaded: System.Xml.Linq 4.0.0.0
[Core] Msg:   Assembly loaded: System.Xml 4.0.0.0
[Core] Msg:   Assembly loaded: System.Linq.Expressions 4.1.0.0
[Core] Msg:   Assembly loaded: Anonymously Hosted DynamicMethods Assembly 0.0.0.0
[Core] Msg:   No system backend...
[Core] Msg: Initializing IGraphicsBackend...
[Core] Msg:   No Graphics...
[Core] Msg: Initializing IAudioBackend...
[Core] Msg:   No Audio...
[Core] Msg: Initializing core plugins...
[Core] Msg: DualityApp initialized
            Debug Mode: False
            Command line arguments:
[Core] Msg: Opening Window...
[Core] Msg: Initializing default content...
[Core] Msg:   Assembly loaded: System.Reflection.Extensions 4.0.0.0
[Core] ERR:   Unable to retrieve image codec for format 'image/png'. Can't initialize default Pixmap Resources.
[Core] Msg:   Assembly loaded: System.Runtime.Extensions 4.1.0.0
[Core] Msg:   Assembly loaded: System.Xml.ReaderWriter 4.0.10.0
[Core] Msg:   Assembly loaded: System.Text.Encoding 4.0.10.0
[Core] ERR:   An error occurred in custom deserialization in object Id 1130222838 of type 'PixelData': NotSupportedException: Unable to retrieve image codec for format 'image/png'. Can't load image data.
              CallStack:
                at Duality.Drawing.PixelData.Duality.Serialization.ISerializeExplicit.ReadData (Duality.Serialization.IDataReader reader) [0x0007a] in <e21d33e3ca0443a6a1a199b31c7bcff3>:0
                at Duality.Serialization.XmlSerializer.ReadStruct (System.Xml.Linq.XElement element, Duality.Serialization.Serializer+ObjectHeader header) [0x00164] in <e21d33e3ca0443a6a1a199b31c7bcff3>:0
[Core] ERR:   An error occurred in custom deserialization in object Id 1130222838 of type 'PixelData': NotSupportedException: Unable to retrieve image codec for format 'image/png'. Can't load image data.
              CallStack:
                at Duality.Drawing.PixelData.Duality.Serialization.ISerializeExplicit.ReadData (Duality.Serialization.IDataReader reader) [0x0007a] in <e21d33e3ca0443a6a1a199b31c7bcff3>:0
                at Duality.Serialization.XmlSerializer.ReadStruct (System.Xml.Linq.XElement element, Duality.Serialization.Serializer+ObjectHeader header) [0x00164] in <e21d33e3ca0443a6a1a199b31c7bcff3>:0
[Core] Msg:   Assembly loaded: System.Collections 4.0.10.0
[Core] Msg:   Assembly loaded: System.IO 4.1.0.0
[Core] Msg:   Assembly loaded: System.Runtime.Extensions 4.1.0.0
[Core] Msg:   Assembly loaded: System.Threading 4.0.10.0
[Core] Msg:   Assembly loaded: System.Linq 4.1.0.0
[Core] Msg:   Assembly loaded: System.Text.Encoding 4.0.10.0
[Core] Msg:   ...done!
[Core] Msg: Assembly loaded: System.Collections 4.0.10.0
[Core] Msg: Assembly loaded: System.Runtime.Extensions 4.1.0.0
[Core] Msg: Assembly loaded: DualityPrimitives 2.0.4.0
[Core] Msg: Assembly loaded: DualityPrimitives 2.0.4.0