DOCBOOK-APPS: Error in 1.69 DSSSL Style Sheets?

Hi!

When trying to produce HTML output using version 1.69 of the DSSSL style
sheets, I get the following error from jade:

jade:/usr/local/docbook/style/dsssl/1.69/html/dbhtml.dsl:324:17:E: invalid
value for "attributes" characteristic

What's the cause of this error?

Any help is greatly appreciated!

Greetings,

	Holger