My translation failed with "The translation came back incomplete for a passage". What can I do?

This happened mostly with Gemini 2.5 and newer models, which think before they write: the thinking used part of the room each passage had, and the translation stopped halfway, so BookyAI refused it rather than keep half a chapter. From version 1.9.22, these models get extra room to think, and a passage is tried again with twice the room. Update BookyAI, open the original book's page and, in the Editions card, press "Try again" under the edition. Chapters already translated are kept. If a passage still fails, the message now says why (for example "it stopped after 512 of about 1094 words"); choosing another model for translations usually helps.