pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76963-09273_SIR_GILBERT_GO_SOFTLY.ps) >>/Users/jc/w/tmp/Tune-76963-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Button_Whitaker/SelectionOfDancesReelsAndWaltzes/09273_SIR_GILBERT_GO_SOFTLY.abc

Error exit status 256; here are some files to check:

[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-76963-09273_SIR_GILBERT_GO_SOFTLY.abc 976 ABC music file with the extracted tune(s)
Tune-76963-09273_SIR_GILBERT_GO_SOFTLY.ps 36465 PostScript
Tune-76963-09273_SIR_GILBERT_GO_SOFTLY.txt 976 Plain-text file with the extracted tune(s)
Tune-76963-get.log 4952 Log file, useful mostly for debugging
These files should be available for 24 hours.