Hi, the current MkIV (ConTeXt ver: 2010.11.12) seems to have problems with start/stopitemize and start/stopcolumns: mostly it hangs at 100% cpu, sometimes it gives this error massage: ! Attempt to double-free penalty node 78778, ignored. \actualshipout ...t \fi \box \shipoutscratchbox }} \endgroup \else \message {... \myshipout ...\@@ppmethod }\gobbleoneargument {#1} \setnextrealpageno \afters... \dofinaloutput ...hbox {\vbox {\dopagebody #1#2}}} \the \everyaftershipout \a... \finaloutput ...EAEAEA \dofinaloutput \fi \fi #1#2 \resetselectiepagina \doin... \sidefloatoutput ...e \else \finalsidefloatoutput \global \sidefloatvsize \n... \invokenormaloutputroutine ...\OTRcommand \output \fi ... l.1121 ? Process aborted Regards, Steffen