#154 Program crashes if directory doesn't exist

[Sven]

[ERROR] FATAL UNHANDLED EXCEPTION: System.IO.DirectoryNotFoundException: Directory '/home/sven/.AudioCuesheetEditor' not found.
at System.IO.Directory.ValidateDirectoryListing (System.String path, System.String searchPattern, System.Boolean& stop) [0x00000] in <filename unknown="">:0
at System.IO.Directory.GetFileSystemEntries (System.String path, System.String searchPattern, FileAttributes mask, FileAttributes attrs) [0x00000] in <filename unknown="">:0
at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00000] in <filename unknown="">:0
at System.IO.Directory.GetFiles (System.String path) [0x00000] in <filename unknown="">:0
at MainWindow..ctor (AudioCuesheetEditor.Program _objProgram) [0x00000] in <filename unknown="">:0
at AudioCuesheetEditor.Program.initialise () [0x00000] in <filename unknown="">:0
at AudioCuesheetEditor.MainClass.Main (System.String[] args) [0x00000] in <filename unknown="">:0