Thank you for your reply Feyona
I don't know if this will help when the team is able to get around to this particular issue, but I thought I would share the the error message I got when I tried to export the portrait thumbnails to blender for creating gallery poses:
Sims 4 Studio 1.2.0.0 (Candy Apple)
S4Studio.Data.IO.Core.UnsupportedResourceVersionException: Exception of type 'S4Studio.Data.IO.Core.UnsupportedResourceVersionException' was thrown.
at S4Studio.Data.IO.Core.VersionResourceExtensions.CheckVersion (S4Studio.Data.IO.Core.IVersionResource v, System.UInt32 max_version, System.UInt32 min_version) [0x00022] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/Core/PackedResource.cs:48
at S4Studio.Data.IO.CAS.GeometryResource.ReadData (System.IO.Stream stream, S4Studio.Data.IO.Core.IReferenceList serializer) [0x0001c] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/CAS/Geometry/GeometryResource.cs:381
at S4Studio.Data.IO.Core.LinkedResourceSerializer.GetBlock (System.Int32 index, S4Studio.Data.IO.Core.LinkedResource resource) [0x00051] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/Core/LinkedResourceSerializer.cs:290
at S4Studio.Data.IO.Core.LinkedResource.Read (System.IO.Stream stream, S4Studio.Data.IO.Core.IReferenceList resources) [0x00056] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/Core/LinkedResource.cs:109
at S4Studio.Data.IO.Package.DBPFPackage.FetchResource (System.Type t, S4Studio.Data.IO.Package.IDBPFResourcePointer index, System.Boolean nocache) [0x002b8] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/Package/DBPFPackage.cs:668
at S4Studio.Data.IO.Package.DBPFPackage.FetchResource[T] (S4Studio.Data.IO.Package.IDBPFResourcePointer index, System.Boolean nocache) [0x00001] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/Package/DBPFPackage.cs:591
at S4Studio.Data.IO.Package.DBPFPackage.FetchResource[T] (S4Studio.Data.IO.Package.IDBPFResourcePointer index) [0x00001] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/IO/Package/DBPFPackage.cs:585
at S4Studio.Data.FileDb.FiletableResourceProvider.FetchResourceData[TResource] (S4Studio.Data.IResourceHandle resourceHandle, System.Boolean useDefault) [0x0001f] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/FileDb/FiletableResourceProvider.cs:86
at S4Studio.Data.ResourceProvider.GetResourceData[TResource] (S4Studio.Data.IResourceHandle resourceHandle, System.Boolean useDefault) [0x00001] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/ResourceProvider.cs:69
at S4Studio.Data.ResourceHandle.Data[TResource] () [0x0000d] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/ResourceHandle.cs:92
at S4Studio.ViewModels.CAS.SimBuilder+<>c__DisplayClass22_0.<ExtractMannequin>b__2 (S4Studio.Data.IO.Core.ResourceKey z) [0x00000] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/ViewModels/CAS/SimBuilder.cs:178
at System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].MoveNext () [0x00036] in /Library/Frameworks/Xamarin.Mac.framework/Versions/4.0.0.84/src/mono/external/corefx/src/System.Linq/src/System/Linq/Select.cs:365
at S4Studio.ViewModels.CAS.SimBuilder.ExtractMannequin (S4Studio.Data.IResourceProvider resources, S4Studio.Data.IO.CAS.BodyType body_type_focus, S4Studio.Rendering.SimBody simbody, System.Int32 lod_level, System.String mannequin_folder, System.String mannequin_texture_path) [0x002b4] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/ViewModels/CAS/SimBuilder.cs:178
at S4Studio.ViewModels.CAS.SimBuilder.ExtractMannequin (S4Studio.Data.IResourceProvider resources, System.String path, S4Studio.Rendering.SimBody simbody, S4Studio.Data.IO.CAS.BodyType body_type, System.Int32 lod_level, System.String& mannequin_folder, System.String& mannequin_texture_path, System.String& rig_path) [0x00049] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/ViewModels/CAS/SimBuilder.cs:227
at S4Studio.ViewModels.Animation.AnimationPackCustomContent+<>c__DisplayClass151_0.<DoExport>b__0 () [0x0012e] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Shared/ViewModels/Animation/AnimationPackCustomContent.cs:905
at S4S.UI.Core.S4SWindow+<>c__DisplayClass10_0.<BeginLoading>b__1 () [0x00016] in /Users/A/Desktop/S4S/TheS4Studio/S4Studio.Mac/UI/Core/S4SWindow.cs:154