[RobertDDL]

Originally Posted by Divingduck

You maybe forgot to setup the check boxes within calibre.

No, I didn't.

cover_generation.json looks like this:

{
"cover_width": 1200,
"last_used_colors": "Silver",
"color_themes": {},
"title_font_family": null,
"title_template": "<b>{title}",
"subtitle_template": "{series:'test($, strcat(\"<i>\", $, \"</i> - \", raw_field(\"formatted_series_index\")), \"\")'}",
"footer_template": "program:\n# Show at most two authors, on separate lines.\nauthors = field('authors');\nnum = count(authors, ' &amp; ');\nauthors = sublist(authors, 0, 2, ' &amp; ');\nauthors = list_re(authors, ' &amp; ', '(.+)', '<b>\\1');\nauthors = re(authors, ' &amp; ', '<br>');\nre(authors, '&amp;&amp;', '&amp;')\n",
"cover_height": 1600,
"title_font_size": 120,
"disabled_styles": [
"Banner",
"Blocks",
"The Cross"
],
"subtitle_font_size": 80,
"subtitle_font_family": null,
"footer_font_size": 80,
"footer_font_family": null,
"disabled_color_themes": [
"Grass",
"Earth",
"Water"
],
"last_used_style": "Half and Half"
}

This leaves "Half and Half" and "Silver" un-disabled and thus selected, and calibre-portable remembers and heeds these settings, but whatever I try, ebook-convert.exe ignores them!?