pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1009-21302_Italian_Sett_tune_2.ps) >>/Users/jc/w/tmp/Tune-1009-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP2/21302_Italian_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
Coll_10093.log 280115 Log file, useful mostly for debugging
Coll_10095.log 282925 Log file, useful mostly for debugging
Tune-1009-21302_Italian_Sett_tune_2.abc 1046 ABC music file with the extracted tune(s)
Tune-1009-21302_Italian_Sett_tune_2.ps 35568 PostScript
Tune-1009-21302_Italian_Sett_tune_2.txt 1046 Plain-text file with the extracted tune(s)
Tune-1009-get.log 5005 Log file, useful mostly for debugging
These files should be available for 24 hours.