Cannot Access "My Library"

Hello!

A couple days ago I reinstalled S4S on my new(ish) laptop and began following this tutorial: 

Everything went great and I accomplished everything I wanted.
I went to try it again today, and I found that I couldn't access "My Library" under "Content Management". I'm quite certain my paths are all correct, I organized them based on this tutorial: 

I've fully uninstalled and reinstalled twice before this. I've never used the game or S4S in any language other than English. 

I frequently receive this error code: 

The Sims 4 Studio - Version 3.1.6.3

System.NullReferenceException: Object reference not set to an instance of an object.

at S4Studio.Shared.ViewModels.Tools.Screenshots.TrayItemVM..ctor(IWindow window, IResourceProvider tray_resources, TrayItemResource tray)

at S4Studio.Shared.ViewModels.Tools.Screenshots.MyLibraryVM.LoadTray()

at S4Studio.UI.Tools.TrayManager..ctor()

at S4Studio.UI.Core.S4SWindowBase.ShowTrayManager()

at S4Studio.ViewModels.GenericUserCommand.<>c__DisplayClass8_0.<.ctor>b__1(Object y)

at S4Studio.ViewModels.GenericUserCommand.Execute(Object parameter)

at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)

at System.Windows.Controls.MenuItem.InvokeClickAfterRender(Object arg)

at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)

at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)


It's worth note that I think I have a tray folder within my tray folder, but I'm skeptical to tamper with this because I value all the info in my tray and I'm not super tech savvy so i don't want to mess anything up. 
Any advice at all is welcome and appreciated
Thanks so much for your time