关闭VS2008没有文件，没有项目，没有解决方案仍然想要保存解决方案

For some reason when I open an instance of VS2008 to view a single file say a web.config file even when I make no changes and close the file I can't close VS2008 unless I save a dummy solution. I have no files or projects in it so why can't I just exit the program? I have to either kill the devenv process or simply save the dummy Solution1.sln each time. It's not like that's onerous but is there a config setting somewhere that insists on saving the solution when you exit?For some reason when I open an instance of VS20