Hi guys, can anyone help with what is causing this fatal error message. I've checked that my textures are named correctly without spaces but i don't think this is a texture naming issue as a believe that is a string filename error (correct me if I'm wrong)

i swear i closed my project last night and everything was fine. I've already spent a lot of time of this and I'd hate to lose my progress, any help would be much appreciated.

Source: System.Drawing

Reason: Parameter is not valid.

Stack trace:    at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)

   at System.Drawing.Bitmap..ctor(Int32 width, Int32 height)

   at EasyFPSEditor15.MapPictureLayer..ctor(Int32 cellSize)

   at EasyFPSEditor15.MapWindow.Clear()

   at EasyFPSEditor15.Map.Clear()

   at EasyFPSEditor15.Map.Load(String path)

   at EasyFPSEditor15.Editor.LoadMap(Int32 index)

   at EasyFPSEditor15.MainForm.ListBoxMapsSelectedIndexChanged(Object sender, EventArgs e)

   at System.Windows.Forms.ListBox.OnSelectedIndexChanged(EventArgs e)

   at System.Windows.Forms.ListBox.set_SelectedIndex(Int32 value)

   at EasyFPSEditor15.Editor.OpenProject()

   at EasyFPSEditor15.MainForm.OpenProjectToolStripMenuItemClick(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)

looks like misnamed file to me.

might not necessarily be a texture though, if you created any new decorations, enemies or pickup sprites last time you had your project open, it could possibly return the same error if its looks for the first frame of animation for that deco or enemy.

go through all your folders, look for non-alphanumeric characters, if you cant find them, back up your .dat files, erase everything in maps.dat, then start with deleting stuff in enemies.dat first. see if it loads, if it doesn't then enemy isnt the problem. proceed with decorations.dat, et al. when you find the one that getting rid of the stuff in it allows the project to load, then you know where your problem is and you can do a throrough check of those images to find the one that is misnamed. get it right, replace dat files with your backed up ones, and you should be ok. the technical term for this process is "deconfuckulating"

Hi Ragnar, thanks so much for the reply, I always appreciate your efforts to help out the community. 

What is the significance of looking for non-alphanumeric characters? Can files not start with anything that isn't a letter or number? If that is the case I did I quick search this morning and found a texture that started with an underscore. However I changed this in both the textures.dat file and in the texture folder itself and I still got the fatal error message.

The only things I did in my last session was create new textures and create some custom modifiers (like a table/chair etc) but all of these are named in the conventional way without spaces.

I'll have to do a complete "deconfuckulating" diagnosis when I have more time haha. 

I did read on a different forum that this error message:

System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)

 at System.Drawing.Bitmap..ctor(Int32 width, Int32 height)

https://stackoverflow.com/questions/11996335/drawtobitmap-system-argumentexcepti...

Could be caused by to much memory usage(?) Because a bitmap is too large(?) I'm not really to sure but could this be the case?