For some purposes, WordSmith needs to save files e.g. lists of results you have made so that you can get at recent files again. To do this it needs a place where your network or operating system lets you save. Usually \wsmith5 is fine, but in some institutional settings the drive or folder may be "read-only". If you see this message, choose Adjust Settings | Folders | Settings and select there a folder where you can write as well as read.
Page url: http://www.lexically.net/downloads/version5/HTML/?folder_is_read_only.htm