I notice since a few days that Format -> Subscript does not work any longer because the file subscript.sty is no longer found.
On https://ctan.org/pkg/fragments?lang=en or rather https://ctan.org/pkg/subscript I find: Provides a command \textsubscript, which is the counterpart to LATEX's \textsuperscript command. From 2006 on this command was made available by the fixltx2e package distributed with LATEX itself, and starting with the LATEX 2015 releases it became part of the LATEX kernel. Thus, these days this code is only necessary if you run on a very old LATEX distribution and want to make use of this command. The obvious fix tlmgr install fragments works, but I thought I bring this to the attention of the developers in case something needs to be changed in LyX. el -- If you want to email me, replace nospam with el -- lyx-users mailing list lyx-users@lists.lyx.org http://lists.lyx.org/mailman/listinfo/lyx-users