pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7371-034_la_Foes_Allemande.ps) >>/Users/jc/w/tmp/Tune-7371-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Stewart/SCAJMR/034_la_Foes_Allemande.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_7371.log 918220 Log file, useful mostly for debugging
Coll_73719.log 911218 Log file, useful mostly for debugging
Form_7371.log 2072 Log file, useful mostly for debugging
Tune-7371-034_la_Foes_Allemande.abc 614 ABC music file with the extracted tune(s)
Tune-7371-034_la_Foes_Allemande.ps 34252 PostScript
Tune-7371-034_la_Foes_Allemande.txt 614 Plain-text file with the extracted tune(s)
Tune-7371-get.log 4747 Log file, useful mostly for debugging
These files should be available for 24 hours.