Hi,
first of all check the svg content (xml version).. it should have some <g> tag with specific id that should references a column of the dataset linked.
Pay attention that this engine version is total different from the SpagoBI, so if you had an old template it isn't compatible because the new one uses the hierarchical concepts.
If you had installed the demos' documents, you should be able to see the svg catalog definition, the dataset structure and the document template.
Hope this help!