pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-79421-3193_Lady_Douglas_of_Bothwell.ps) >>/Users/jc/w/tmp/Tune-79421-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR12/3193_Lady_Douglas_of_Bothwell.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_79421.log 143533 Log file, useful mostly for debugging
Tune-79421-3193_Lady_Douglas_of_Bothwell.abc 902 ABC music file with the extracted tune(s)
Tune-79421-3193_Lady_Douglas_of_Bothwell.ps 39016 PostScript
Tune-79421-3193_Lady_Douglas_of_Bothwell.txt 902 Plain-text file with the extracted tune(s)
Tune-79421-get.log 4960 Log file, useful mostly for debugging
These files should be available for 24 hours.