exporting map as obj gives an error
so, im trying to export greenflower zone act 1 as an .obj, but it gives this error when trying to export it
***********SYSTEM INFO***********
OS: Microsoft Windows 11 Home
GPU: NVIDIA GeForce GTX 1050 Ti
Zone Builder: v2.14
********EXCEPTION DETAILS********
Object reference not set to an instance of an object.
at CodeImp.DoomBuilder.BuilderModes.EffectSRB2ThingVertexSlope.Update()
at CodeImp.DoomBuilder.BuilderModes.SectorData.Update()
at CodeImp.DoomBuilder.BuilderModes.VisualUpper.Setup()
at CodeImp.DoomBuilder.BuilderModes.BaseVisualSector.Rebuild()
at CodeImp.DoomBuilder.BuilderModes.BaseVisualSector..ctor(BaseVisualMode mode, Sector s)
at CodeImp.DoomBuilder.BuilderModes.IO.WavefrontExporter.CreateObjFromSelection(ICollection`1 sectors, WavefrontExportSettings& data)
at CodeImp.DoomBuilder.BuilderModes.IO.WavefrontExporter.Export(ICollection`1 sectors, WavefrontExportSettings settings)
at CodeImp.DoomBuilder.BuilderModes.BuilderPlug.ExportToObj()
at CodeImp.DoomBuilder.Actions.Action.Begin()
at CodeImp.DoomBuilder.Actions.ActionManager.InvokeAction(String actionname)
at CodeImp.DoomBuilder.Windows.MainForm.InvokeTaggedAction(Object sender, EventArgs e)
at CodeImp.DoomBuilder.BuilderModes.MenusForm.InvokeTaggedAction(Object sender, EventArgs e)
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
not sure if its an error in my end or if its just simply not possible to export maps as .obj using zone builder any idea about what's going on?