[NTG-context] synctex and TeXShop problem

With the latest betas, I see that with the TeXShop Engine #!/bin/tcsh # Before using this engine, you must run the following command once in Terminal: luatools --generate set path= ($path /usr/texbin /Users/bowen1/Dropbox/ConTeXt/tex/texmf-osx-64/bin) mtxrun --script context --autogenerate --file-line-error "$1” and \setupsynctex[state=start, method=max] in the source file, the requisite *filename*.synctex auxiliary file is produced on processing. But I am still not getting any linkage between the source file and the preview file, that is, clicking on one does not have any effect on the other. Is there something else that I need? I am running ConTeXt ver: 2017.11.15 with macOS 10.13.1. Alan