Epubcheck Version 1.2

ERROR: test.tree/test.epub: extra field length for first filename must be 0, but was 28
ERROR: test.tree/test.epub/OPS/test.opf(3): value of attribute "unique-identifier" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(8): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(13): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(14): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(15): value of attribute "id" is invalid; must be an XML name without colons
ERROR: test.tree/test.epub/OPS/test.opf(18): item with id 'ncx' not found
ERROR: test.tree/test.epub/OPS/test.opf(19): item with id 'test.xhtml' not found
ERROR: test.tree/test.epub/OPS/test.xhtml(12): elements from namespace "" are not allowed

Check finished with warnings or errors!