Sometimes several of my MultiExcerpt Include macros do not render in the pages, PDF, or HTML output. The error message is "MultiExcerpt named 'XXX' was not found. The page: YYY was found, but the multiExcerpt named 'XXX' was not."
The page and the MultiExcerpt are there. Forcing an update works temporarily to render it, but it occurs later.
Any idea what is causing this and how to fix it?