Getting error when trying to open CC (solved)

Hello,
I haven't used s4studio or played the game in about six months, today I decided to use both again so I updated my game and opened s4studio, no issue so far - but when I try to open CC that I previously made last year (they all worked fine in both studio and game then) I get an error message, and I'm not sure what's wrong. 

Here's what the message says:

The Sims 4 Studio - Version 3.1.3.3

S4Studio.Data.IO.Package.CorruptResourceException: Resource: 3453CF95-00000000-670F265F9B24E9DB in package:D:\Origin Games\The Sims 4\Data\Client\ClientDeltaBuild8.package contains invalid data. ---> Ionic.Zlib.ZlibException: Bad state (unknown compression method (0x00))

à Ionic.Zlib.InflateManager.Inflate(FlushType flush)

à Ionic.Zlib.ZlibCodec.Inflate(FlushType flush)

à Ionic.Zlib.ZlibBaseStream.Read(Byte[] buffer, Int32 offset, Int32 count)

à Ionic.Zlib.ZlibStream.Read(Byte[] buffer, Int32 offset, Int32 count)

à Ionic.Zlib.ZlibBaseStream.UncompressBuffer(Byte[] compressed, Stream decompressor)

à Ionic.Zlib.ZlibStream.UncompressBuffer(Byte[] compressed)

à S4Studio.Data.IO.Package.PackageCompressor.Decompress(Byte[] data, UInt32 length, DBPFCompressionType type)

à S4Studio.Data.IO.Package.DBPFPackage.Decompress(Byte[] data, UInt32 length, DBPFCompressionType type)

à S4Studio.Data.IO.Package.DBPFPackage.FetchResource(Type t, IDBPFResourcePointer index, Boolean nocache)

--- Fin de la trace de la pile d'exception interne ---

à S4Studio.Data.IO.Package.DBPFPackage.FetchResource(Type t, IDBPFResourcePointer index, Boolean nocache)

à S4Studio.Data.IO.Package.DBPFPackage.FetchResource[T](IDBPFResourcePointer index, Boolean nocache)

à S4Studio.Data.IO.Package.DBPFPackage.FetchResource[T](IDBPFResourcePointer index)

à S4Studio.Data.FileDb.FiletableResourceProvider.FetchResourceData[TResource](IResourceHandle resourceHandle, Boolean useDefault)

à S4Studio.Data.ResourceProvider.GetResourceData[TResource](IResourceHandle resourceHandle, Boolean useDefault)

à S4Studio.Data.ResourceHandle.Data[TResource]()

à S4Studio.ViewModels.CAS.SimBuilder.LoadCASTexture[T](IResourceKey key)

à S4Studio.ViewModels.CAS.SimBuilder.LoadCASTexture(CASPartResource casp)

à S4Studio.Shared.ViewModels.CAS.WPFMannequinPart.UpdateTexture()

à S4Studio.ViewModels.CAS.MannequinPart.set_CASPart(CASPartResource value)

à S4Studio.ViewModels.CAS.MannequinPart.set_CASPartInstance(UInt64 value)

à S4Studio.ViewModels.CAS.Mannequin.UpdateMannequin()

à S4Studio.Shared.ViewModels.CAS.WPFMannequin.UpdateMannequin()

à S4Studio.ViewModels.CAS.Mannequin.set_AgeGender(AgeGenderFlags value)

à S4Studio.ViewModels.CAS.CASStandalone.UpdateMannequin()


Note: I also tried to open CC that isn't mine from my mods folder and some also don't work and I get the same error message.

Thank you for your help!