Only add SONY periodical code to downloaded news if output profile is set to one of the SONY reader profiles. This is needed because the ever delightful Stanza crashes and burns when an EPUB has the periodical code

src/calibre/customize/profiles.py

@@ -259,6 +259,9 @@ class OutputProfile(Plugin):
     #: Number of ems that the left margin of a blockquote is rendered as
     mobi_ems_per_blockquote = 1.0
 
+    #: Special periodical formatting needed in EPUB
+    epub_periodical_format = None
+
     @classmethod
     def tags_to_string(cls, tags):
         return escape(', '.join(tags))
@@ -439,6 +442,9 @@ class SonyReaderOutput(OutputProfile):
     fsizes                    = [7.5, 9, 10, 12, 15.5, 20, 22, 24]
     unsupported_unicode_chars = [u'\u201f', u'\u201b']
 
+    epub_periodical_format = 'sony'
+    #periodical_date_in_title = False
+
 
 class KoboReaderOutput(OutputProfile):
 
@@ -561,6 +567,8 @@ class CybookOpusOutput(SonyReaderOutput):
     fbase                     = 16
     fsizes                    = [12, 12, 14, 16, 18, 20, 22, 24]
 
+    epub_periodical_format = None
+
 class KindleOutput(OutputProfile):
 
     name        = 'Kindle'

src/calibre/ebooks/epub/output.py

@@ -187,9 +187,10 @@ class EPUBOutput(OutputFormatPlugin):
             metadata_xml = None
             extra_entries = []
             if self.is_periodical:
-                from calibre.ebooks.epub.periodical import sony_metadata
-                metadata_xml, atom_xml = sony_metadata(oeb)
-                extra_entries = [('atom.xml', 'application/atom+xml', atom_xml)]
+                if self.opts.output_profile.epub_periodical_format == 'sony':
+                    from calibre.ebooks.epub.periodical import sony_metadata
+                    metadata_xml, atom_xml = sony_metadata(oeb)
+                    extra_entries = [('atom.xml', 'application/atom+xml', atom_xml)]
             oeb_output = plugin_for_output_format('oeb')
             oeb_output.convert(oeb, tdir, input_plugin, opts, log)
             opf = [x for x in os.listdir(tdir) if x.endswith('.opf')][0]

src/calibre/manual/plugins.rst

@@ -36,6 +36,7 @@ FileTypePlugin
 
 .. _pluginsMetadataPlugin:
 
+
 Metadata plugins
 -------------------
 
@@ -50,7 +51,6 @@ Metadata plugins
    :members:
    :member-order: bysource
 
-.. _pluginsMetadataSource:
 
 Catalog plugins
 ----------------
@@ -60,6 +60,7 @@ Catalog plugins
    :members:
    :member-order: bysource
 
+.. _pluginsMetadataSource:
 
 Metadata download plugins
 --------------------------