Welcome Ben, PDF4ST works with VisualWorks from at least 7.6 upwards. Currently I use VW 7.10.1 and 8.0 – therefore the best support is on those versions J. Cheers, Christian Von: pdf4st-bounce@xxxxxxxxxxxxx [mailto:pdf4st-bounce@xxxxxxxxxxxxx] Im Auftrag von Ben Coman Gesendet: Dienstag, 10. März 2015 10:46 An: pdf4st@xxxxxxxxxxxxx Betreff: [pdf4st] Best supported platform greetings? What version of Visualworks (or other smalltalk) is PDF4ST best supported on? cheers -ben