MATLAB is unable to find the HTML help documents, based on your current Documentation location setting. Some possible reasons for this are as follows:

• The Documentation location is set to your CD-ROM drive, but the Documentation CD-ROM is not in the drive.
• The setting is no longer valid, because the help files have been moved or deleted.
• The setting is incorrect, perhaps mistyped.

To view or change the location where MATLAB expects to find the help documents, click here to bring up the Preferences window showing the Help Preferences. The Documentation Location field shows the location of the help documents.

You can set your documentation location to any of the following alternatives (listed with examples):

CD-ROM drive	Z:\help
Installed in the $MATLABROOT directory, or in another location on your hard disk.	C:\MATLAB\HELP
Installed in a network location	\\CampusServer\Matlab\Help

If you need to install the help documents at a new location, use the MATLAB Documentation Installer.

In addition, you can visit the MathWorks web site for information, including:

• Technical Support
• Online Documentation