ProppFrexx v4.5.1.5 error report adding song directly from folder

[phonic]

Error dragging and dropping song directly from folder:

6/23/2025 5:13:18 PM [v4.5.1.5]:********** Error/Exception Information **********
Error Message: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Error Type: System.ArgumentOutOfRangeException
Error Source: mscorlib.Void ThrowArgumentOutOfRangeException(System.ExceptionArgument, System.ExceptionResource)
********** System Stack Trace **********
at System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource)
at ProppFrexx.Playlist.<treeListTracks_DragDrop>d__420.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
********** Environment Stack Trace **********
at System.Environment.GetStackTrace(Exception e, Boolean needFileInfo)
at System.Environment.get_StackTrace()
at ProppFrexx.ErrorDialog.GetExceptionInfo(Exception e, Boolean full)
at ProppFrexx.ProppFrexx_ONAIR.JSm3(Exception )
at ProppFrexx.ProppFrexx_ONAIR.JSmJ(Exception )
at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception t)
at System.Windows.Forms.Control.InvokeMarshaledCallbacks()
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(IntPtr dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at oK.Qg.Main(String[] args)
********** End **********

[radio42]

Unfortunately I can not reproduce the error! Drag and Drop works like a charm here - tested on multiple machines.

What and from where are you exactly dropping auido tracks? A specific folder, drive, NAS? And what audio files or folders? And to where? An empty playlist, to the top, end, in the middle?
Have you tried to reboot your PC? Maybe Windows itself go stuck somewhere?
Maybe your layout file (ProppFrexx ONAIR.Playlist.layout or ProppFrexx ONAIR.Playlist2.layout) got corrupted - you might try to delete them from your ProppFrexx AppDataUser folder.

[phonic]

accessing files via a mapped Network share to a NAS. z:/storage/...
Restarted ProppFrexx for them, and works fine again.

[radio42]

Perfect, so it must have been an OS issue then...