Dear all, After my update a few days ago I have run into the problem earlier described under the subject "new beta" (Marco Pessotto). The file processed nicely until then. I use gentium as the main font. \definefont[gentium][Xserif][name:Gentium at 12pt] See more details underneath. I am right before a deadline, so any help is welcome. Kind regards, Robert Snippets from log file: structure > sectioning > subsection @ level 4 : 0.0.1.1 -> Sociale vorming ! Math error: parameter \Umathquad\displaystyle is not set. system > tex > error on line 741 in file asp87b.tex: Math error: parameter \Umathquad\displaystyle is not set ... \mathematics ...rmalstartimath #1\normalstopimath \fi \dodosymbol ...bol \csname \??ss :#1:#2\endcsname \relax }\relax \donormalsymbol ...bol \redosymbol \currentsymbol \fi \fi \dodosymbol ...bol \csname \??ss :#1:#2\endcsname \relax }\relax \donormalsymbol ...bol \redosymbol \currentsymbol \fi \fi <to be read again> } ... l.741 \item h et type van de abc abc abc ? ! \textfont0 is undefined (character 8226). system > tex > error on line 741 in file asp87b.tex: \textfont0 is undefined (character 8226) ... I use context version: 2011.05.18 18:04. mkiv lua stats > used config file - selfautoparent:/texmf/web2c/texmfcnf.lua mkiv lua stats > used cache path - /prog2/context2/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e mkiv lua stats > input load time - 0.005 seconds mkiv lua stats > stored bytecode data - 285 modules, 60 tables, 345 chunks mkiv lua stats > loaded tex modules - 4 requested, 4 found (*-newmat t-annotation t-lettrine t-simplefonts), 0 missing mkiv lua stats > cleaned up reserved nodes - 33 nodes, 11 lists of 426 mkiv lua stats > node memory usage - 62 hlist, 2 vlist, 256 disc, 3 math, 369 glue, 134 kern, 26 penalty, 1 noad, 1 math_char, 1875 glyph, 877 attribute, 106 glue_spec, 183 attribute_list, 2 temp, 7 if_stack, 8 local_par, 3 dir, 2 late_lua mkiv lua stats > node list callback tasks - 6 unique task lists, 6 instances (re)created, 4004 calls mkiv lua stats > used backend - pdf (backend for directly generating pdf output) mkiv lua stats > loaded patterns - en::2 nl::1 mkiv lua stats > callbacks - 4337 direct, 5407 indirect, 9744 total mkiv lua stats > lxml preparation time - 0.000 seconds, 0 nodes, 17 lpath calls, 6 cached calls mkiv lua stats > result saved in file - asp87b.pdf mkiv lua stats > loaded fonts - 4 files: lmmono10-regular.otf texgyretermes-bold.otf texgyretermes-italic.otf texgyretermes-regular.otf mkiv lua stats > fonts load time - 1.036 seconds mkiv lua stats > math processing time - 2.428 seconds mkiv lua stats > graphics processing time - 0.003 seconds including tex, 1 processed images mkiv lua stats > luatex banner - this is luatex, version beta-0.70.1-2011051908 (rev 4277) mkiv lua stats > control sequences - 30844 of 165536 mkiv lua stats > current memory usage - 33 MB (ctx: 34 MB) mkiv lua stats > runtime - 5.377 seconds, 3 processed pages, 3 shipped pages, 0.558 pages/second