在我的发行版中，MWE 无法编译：
\documentclass{article}
\usepackage[most]{tcolorbox}
\begin{document}
Test
\end{document}
错误消息：
This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017)
(preloaded format=pdflatex) \write18 enabled. entering extended mode
(./bac_a_sable.tex LaTeX2e <2017-04-15 Babel <3.10 and hyphenation
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/usr/local/texlive/2017/texmf-dist/tex/latex/tcolorbox/tcolorbox.sty:2196:
I can't find file `tcbposter.code.tex'. <to be read again
\relax l.2196 ...expand\tcbuselibrary{\tcb@optionlist}}\x
答案1
当手动更新软件包时添加或删除文件，您需要运行texhash以使 TeX 知道这些更改。另请参阅LaTeX 如何查找包文件？
因此，在手动更新之后，最好始终运行texhash以确保所有更改都得到实施。
只是重复一下评论中的警告：一般来说，真的手动更新软件包是个坏主意。软件包应该始终只通过 TeX 发行版（MikTeX 的控制台或 TeX lives'）进行更新tlmgr。请参阅我如何更新我的 TeX 发行版？. 复杂软件包或具有许多版本敏感依赖关系的软件包（我想到或之expl3类的软件包，和 Biber 之间的依赖关系永远令人沮丧，...）的手动更新容易出现复杂情况。siunitxchemmacrosbiblatex