pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-61068-21131_Whipples_Sett_tune_2.ps) >>/Users/jc/w/tmp/Tune-61068-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/21131_Whipples_Sett_tune_2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-61068-21131_Whipples_Sett_tune_2.abc 923 ABC music file with the extracted tune(s)
Tune-61068-21131_Whipples_Sett_tune_2.ps 34358 PostScript
Tune-61068-21131_Whipples_Sett_tune_2.txt 923 Plain-text file with the extracted tune(s)
Tune-61068-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-61068-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-61068-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-61068-get.log 9567 Log file, useful mostly for debugging
These files should be available for 24 hours.