< I tried to create and delete a directory from the Windows user software in an area that I have authorization to do so. It let me create the directory but would not let me delete the directory. >
-49 is "file busy" if this occurs while deleting a folder it means that the folder still contains one or more files, or that there is an open working directory referencing that folder.
You may need to restart the computer to clear some of these lingering working directories.
But TeleFinder for windows is deleting folders just fine here.