What steps will reproduce the issue?
1. Have handbrake or something else encoding a movie into the search path
2. Tools -> Auto rename files and folders for all movies

What is the expected output?  What do you see instead?
MCM should gracefully skip 'in use' files and complete the renaming process on other
files. Instead it renames a good portion of the folders correctly, but throws an exception
error(presumably when it gets to the file currently encoding/in use), and stops, not
completing the process on the other folders that aren't in use.

MCM 1.28 build 35410.1300

Partial Exception text

************** Exception Text **************
System.IO.IOException: The directory name is invalid.

   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.Directory.InternalGetFileDirectoryNames(String path, String userPathOriginal,
String searchPattern, Boolean includeFiles, Boolean includeDirs, SearchOption searchOption)
   at System.IO.Directory.GetDirectories(String path, String searchPattern, SearchOption
searchOption)
   at System.IO.Directory.GetDirectories(String path)
   at �  .�(String �)
   at �  .� (Object �, EventArgs �)
   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)
...