The documents are for use in Microsoft Word or PowerPoint, versions 1997 and higher. They are not guaranteed to work with other word processing software (such as Microsoft Works).
To try to fix your problem, when downloading, do not choose Run, but choose "Save to Disk." After the download is complete, try opening Microsoft Word or PowerPoint. Go to File, then Open on the menu. Browse to the location of the file on your computer. Select the file and click Open.
If you are using Microsoft Word or PowerPoint, 1997 or higher, and you still get the error, the document may have been incomplete or corrupted during the downloading process. Please include the word processing software you are using, the version of that software, and the document name you are having problems with. Send an e-mail to CBSStore@ChristianityToday.com.