OpenSP: The name and VI delimiter can be omitted from an attribute specification only if SHORTTAG YES is specified
You have specified an attribute without giving an equals sign and its value. "VI delimiter" is a technical term for the equals sign. A common cause for this error message is the use of "Attribute Minimization" in document types where it is not allowed, in XHTML for instance.</p>
Add in the equals sign and an appropriate value for the attribute.
- W3 validator: http://validator.w3.org/