I'm on Mac 10.5.4 with Coot pre-5 1391 (but problem was same with pre-5 986). I have reduce and probe installed. I have .coot file setup as follows: (set! *probe-command* "/sw/share/xtal/bin/probe") (set! *reduce-command* "/sw/share/xtal/bin/reduce") (set-find-hydrogen-torsion 1) (set-do-probe-dots-on-rotamers-and-chis 1) (set-do-probe-dots-post-refine 1) (set-rotamer-lowest-probability 0.5) Both probe and reduce execute when the command is issued. If I do a real space zone refinement no molprobity dots are shown. Yet I see in the log: probe command "/sw/share/xtal/bin/probe" ("-mc" "-u" "-quiet" "-drop" "-stdbonds" "- both" "(file1 within 10.6 of 22.95, 63.74, 29.07, not water not (chainb 77)),file2" "file2" "molprobity-tmp-reference-file.pdb" "molprobity-tmp-moving-file.pdb") I also get a coot-molprobity directory with a probe-dots.out file The probe-dots.out has many lines of :1->1:wc: B 2 THR C : B 4 ASP OD1 :0.231:0.333:11.947:87.693:31.375:0.000:0.0106:C:O:11.947:87.693:31.375:151.85:159. 18 :1->1:wc: B 2 THR C : B 4 ASP OD1 :0.231:0.403:12.113:87.887:31.383:0.000:0.0047:C:O:12.113:87.887:31.383:151.85:159. 18 :1->1:wc: B 2 THR C : B 4 ASP OD1 :0.231:0.259:12.022:87.681:31.626:0.000:0.0213:C:O:12.022:87.681:31.626:151.85:159. 18 :1->1:wc: B 2 THR C : B 4 ASP OD1 :0.231:0.347:12.196:87.873:31.635:0.000:0.0091:C:O:12.196:87.873:31.635:151.85:159. 18 My question is why the molprobity not being displayed on the screen.