Keep getting the same error message..

Hi i have tried solving this error by doing some basic things like uninstalling, exiting out then coming back etc. but it still pops up and im not sure what is causing it. Not sure if what i am doing is causing this so ill explain what i do. Ill open up s4s and open up whatever hair package i am working on (retexturing hairs) so i import my palette of colours then just go through each swatch importing the mesh for each one and 90% of the time after a few swatches this error message will pop up, then when i exit out of it and anything else i click, s4s will stop working and crash. If someone could help me out that would be great! 

Error message:

The Sims 4 Studio - Version 3.1.2.1

System.ArgumentException: Parameter is not valid.

at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)

at System.Drawing.Bitmap..ctor(Int32 width, Int32 height)

at S4Studio.AMDCompress.AMD2Bitmap(AMD_TC_Texture destTexture)

at S4Studio.AMDCompress.DecompressImage(Stream stream, Boolean fast)

at S4Studio.AMDCompress.DecompressImage(Byte[] buffer, Boolean fast)

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

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

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

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

at S4Studio.ViewModels.CAS.Mannequin.Update(CASPartResource casp)

at S4Studio.Shared.ViewModels.CAS.WPFMannequin.Update(CASPartResource casp)

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