OJS3.0.2 and Crossref Plugin validation error

This error message indicates that schema validation is still being attempted against the www… url instead of the data… url.

In the patch at Crossref 4.3.6 schema URL changed · Issue #2258 · pkp/pkp-lib · GitHub there is not only a change for the definition in the XML file and PHP files, but also a change to a record in the database:

UPDATE filter_groups SET output_type = 'xml::schema(http://data.crossref.org/schemas/crossref4.3.6.xsd)' WHERE output_type = 'xml::schema(http://www.crossref.org/schema/deposit/crossref4.3.6.xsd)'

Did you manually make all of these changes?