pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-73096-1809_Cahusac_FTM.ps) >>/Users/jc/w/tmp/Tune-73096-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/dfty/1809_Cahusac_FTM.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_73096.log 288545 Log file, useful mostly for debugging
Tune-73096-1809_Cahusac_FTM.abc 12029 ABC music file with the extracted tune(s)
Tune-73096-1809_Cahusac_FTM.ps 122420 PostScript
Tune-73096-1809_Cahusac_FTM.txt 12029 Plain-text file with the extracted tune(s)
Tune-73096-get.log 17588 Log file, useful mostly for debugging
These files should be available for 24 hours.