I made some low poly volcanic props in blender for an inferno map I was going to make in Gzdoom builder but I got this when I loaded it and tried to work with the exported obj file in GZDoom builder.
***********SYSTEM INFO***********
OS: Microsoft Windows 7 Professional
GPU: NVIDIA GeForce GT 525M
GZDB: R2787
********EXCEPTION DETAILS********
Value cannot be null.
Parameter name: key
at System.ThrowHelper.ThrowArgumentNullException(ExceptionArgument argument)
at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
at CodeImp.DoomBuilder.Geometry.Triangulation.FindRightMostVertex(Dictionary`2 sides, Dictionary`2 ignores) in x:\Source\Core\Geometry\Triangulation.cs:line 380
at CodeImp.DoomBuilder.Geometry.Triangulation.DoTrace(Sector s) in x:\Source\Core\Geometry\Triangulation.cs:line 235
at CodeImp.DoomBuilder.Geometry.Triangulation.Triangulate(Sector s) in x:\Source\Core\Geometry\Triangulation.cs:line 128
at CodeImp.DoomBuilder.Map.Sector.Triangulate() in x:\Source\Core\Map\Sector.cs:line 360
at CodeImp.DoomBuilder.Map.MapSet.Update(Boolean dolines, Boolean dosectors) in x:\Source\Core\Map\MapSet.cs:line 1031
at CodeImp.DoomBuilder.BuilderModes.EditSelectionMode.OnAccept() in x:\Source\Plugins\BuilderModes\ClassicModes\EditSelectionMode.cs:line 1573
at CodeImp.DoomBuilder.Editing.EditingManager.AcceptMode() in x:\Source\Core\Editing\EditingManager.cs:line 447
at CodeImp.DoomBuilder.BuilderModes.EditSelectionMode.OnDisengage() in x:\Source\Plugins\BuilderModes\ClassicModes\EditSelectionMode.cs:line 1762
at CodeImp.DoomBuilder.Editing.EditingManager.ChangeMode(EditMode nextmode) in x:\Source\Core\Editing\EditingManager.cs:line 355
at CodeImp.DoomBuilder.Editing.EditModeInfo.UserSwitchToMode() in x:\Source\Core\Editing\EditModeInfo.cs:line 166
at CodeImp.DoomBuilder.Actions.Action.Begin() in x:\Source\Core\Actions\Action.cs:line 256
at CodeImp.DoomBuilder.Actions.ActionManager.BeginActionByKey(Int32 key, Boolean repeated) in x:\Source\Core\Actions\ActionManager.cs:line 557
at CodeImp.DoomBuilder.Actions.ActionManager.KeyPressed(Int32 key) in x:\Source\Core\Actions\ActionManager.cs:line 496
at CodeImp.DoomBuilder.Windows.MainForm.MainForm_KeyDown(Object sender, KeyEventArgs e) in x:\Source\Core\Windows\MainForm.cs:line 1378
at System.Windows.Forms.Control.OnKeyDown(KeyEventArgs e)
at System.Windows.Forms.Control.ProcessKeyEventArgs(Message& m)
at System.Windows.Forms.Control.ProcessKeyMessage(Message& m)
at System.Windows.Forms.Control.WmKeyChar(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.Form.WndProc(Message& m)
at CodeImp.DoomBuilder.Windows.MainForm.WndProc(Message& m) in x:\Source\Core\Windows\MainForm.cs:line 4091
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)
The obj file is right here:
https://1drv.ms/u/s!AtUwonlWFY1HhiKlE1Wa58dtnmiY