Problems with creating objects

Hi, I keep getting these errors when I try to create objects package from sims4studio, the other catagories work normally though. How can I fix these problems. Please help ;_;

The Sims 4 Studio - Version 3.2.1.3

System.AggregateException: One or more errors occurred. (startIndex cannot be larger than length of string. (Parameter 'startIndex'))

---> System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string. (Parameter 'startIndex')

at System.String.Substring(Int32 startIndex, Int32 length)

at S4Studio.Core.CloneEngine.GetNameRootFromObjectName(String object_name, String creator, String ts)

at S4Studio.Core.CloneEngine.CloneObj(IDBPFPackage result, String hash_salt, CloneObjectOptions opts, IStringTableCache global_stbl, IResourceProvider game, Sims4FileTable game_filetable, UInt64 instance, String creator, Boolean& swatchable)

at S4Studio.Shared.ObjectFeatureViewModel.Clone(IDBPFPackage package, String hash, IEnumerable`1 selected_prototypes)

at S4Studio.Shared.FeatureViewModel.<>c__DisplayClass28_0.<CreateItem>b__0()

at System.Threading.Tasks.Task.InnerInvoke()

at System.Threading.Tasks.Task.<>c.<.cctor>b__272_0(Object obj)

at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)

--- End of stack trace from previous location ---

at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)

at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)

--- End of inner exception stack trace ---