That error literally says you what you need to send.
I don't know if you're referring to this but I'll send it anyway.
Source: System.Drawing
Reason: El parámetro no es válido.
Stack trace: en System.Drawing.Bitmap..ctor(String filename)
en EasyFPSEditor15.ResourceTexture.Load(String path)
en EasyFPSEditor15.Resources.LoadSinglelineResource(String path, Int32 type)
en EasyFPSEditor15.Resources.LoadAllResources(String dataPath)
en EasyFPSEditor15.Editor.OpenProject()
en EasyFPSEditor15.MainForm.OpenProjectToolStripMenuItemClick(Object sender, EventArgs e)
en System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
en System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
en System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
en System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
en System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
en System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
en System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
en System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
en System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
en System.Windows.Forms.Control.WndProc(Message& m)
en System.Windows.Forms.ScrollableControl.WndProc(Message& m)
en System.Windows.Forms.ToolStrip.WndProc(Message& m)
en System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
en System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
en System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
en System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)