Hi, Something has changed in the reference mechanism, and + is no longer ignored as a reference. For example, \setupinteraction[state=start] \starttext \placeformula[+] \startformula E = mc^2 \stopformula \placeformula[+] \startformula E = mc^2 \stopformula \stoptext gives [1.1pdfTeX warning (ext4): destination with the same identifier (name{+}) has been already used, duplicate ignored \actualshipout ... \box \postponedcontent \box 0}} \else \message {[\ifarrang... \myshipout ... \fi {\thisisrealpage \realfolio #1} \gotonextrealpage \aftersh... \dofinaloutput ...agebody #1#2\setpagecounters }}} \fi \the \everyaftershipou... \finaloutput ...EAEAEA \dofinaloutput \fi \fi #1#2 \resetselectiepagina \incr... \sidefloatoutput ...e \else \finalsidefloatoutput \global \sidefloatvsize \n... <argument> ...\fi \else \the \defaultstreamoutput \fi ... l.12 \stoptext Aditya