What does this mean
 

Can anyone explain this to me, I am an idiot I know. Because my member dots still do not work, and when i close the interface it gives me an error.

1.2.4 Unknown Thread Error: mscorlib
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.File.Delete(String path)
at Microsoft.VisualBasic.FileIO.FileSystem.DeleteFileInternal(String file, UIOptionInternal showUI, RecycleOption recycle, UICancelOption onUserCancel)
at Microsoft.VisualBasic.MyServices.FileSystemProxy.DeleteFile(String file)
at EQ2MAPUpdater.Options.Clearcache_Click(Object sender, EventArgs e)
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(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)Access to the path 'C:\Program Files (x86)\Sony Online Entertainment\EQ2MAP Updater\cache\updates_list.xml' is denied.

It means you need to read the very first entry in the Common Issues thread ;)

Hmm, I think that may have worked. I stopped gettign the error message. Although my member dots still don't work. Im still trying to fix that one. So thank you.

If you're using a custom interface, you need to make sure it's allowing you to patch the proper files, or that it has been updated since SOE fixed things. Are you using a full custom UI set?