You can get a more recent version at my website. There are also some free extra downloads (programs, word lists, etc.) there too. And links to sources of free text corpora.
The latest official Oxford University Press version is usually not as up to date.
visit http://www.lexically.net/wordsmith/version4/screenshots/index.html for screenshots of what Oxford WordSmith Tools can do. This may give you useful ideas for your own research and will give you a better idea of the limitations of WordSmith too!
Visit http://www.lexically.net/wordsmith/purchasing.htm for details of suppliers.
Complaints & Suggestions
If you do not have the official OUP version but one from my website, please do not email OUP but me (Mike.Scott@liv.ac.uk). Please give me as full a description of the problem you need to tackle as you can, and details of the equipment too. Please don't include any attachments over 200K in size. I do try to help but cannot promise to…