Hi--- All of my figures that use MP boxes are now failing. It looks like "boxjoin" (from the MP "boxes" macros) is not being recognized. Also, apparently unrelated, I wonder if the comparison in "boxes.mp" is correct as it appears that lmtx loads "mp-xbox.mpiv" instead of "mp-xbox.mpxl". Here is some log output and a (mostly) MWE. Thanks for any suggestions, ---K % system > ConTeXt ver: 2021.07.16 22:03 LMTX fmt: 2021.7.21 int: english/english % metapost > initializing instance 'metafun:1' using format 'metafun' and method 'default' % metapost > loading 'metafun' as 'metafun.mpxl' using method 'default' % metapost > initializing number mode 'scaled' % metapost > trace > This is MPLIB for LuaMetaTeX, version 3.11, running in scaled mode. % metapost > trace > % metapost > trace > loading metafun for lmtx, including the plain 1.004 base definitions % metapost > trace > % metapost > trace > >> 2 % metafun > log > % metafun > log > error: Isolated expression % metafun > log > % metapost > trace > >> boxjoin % metapost > trace > <to be read again> % metapost > trace > <*> show metapostversion; boxjoin( % metafun > log > % metafun > log > I couldn't find an '=' or ':=' after the expression that is shown above this % error message, so I guess I'll just ignore it and carry on. % metafun > log > % metapost > trace > ); boxit.a("a"); boxit.bb("bb"); boxit.ccc("ccc"); drawboxed(a,bb,ccc); ; % metapost > trace > %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \startMPdefinitions input boxes \stopMPdefinitions \starttext hello \startalignment[center] \startplacefigure \startMPcode%{aaa} show metapostversion; % boxes.mp: scantokens("input mp-xbox.mp" & (if metapostversion > 2 : "xl" else : "iv" fi)) ; % => loads mp-xbox.mpiv in lmtx rather than mp-xbox.mpxl as i would have expected boxjoin(); % boxjoin(a.sehttp://a.se/=b.sw; a.ne=b.nw); boxit.a("a"); boxit.bb("bb"); boxit.ccc("ccc"); drawboxed(a,bb,ccc); \stopMPcode \stopplacefigure \stopalignment goodbye \stoptext %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Kevin W. Rudd, Ph.D. CAPT, USN (Ret) Computer Architecture & Computer Engineering Advanced Computing Systems (ACS) Research Program Laboratory for Physical Sciences (LPS) 443-654-7878 kevin@lps.umd.edumailto:kevin@lps.umd.edu Visiting Research Professor United States Naval Academy rudd@usna.edumailto:rudd@usna.edu