pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-39549-10572_Hob_or_Knob.ps) >>/Users/jc/w/tmp/Tune-39549-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP1/10572_Hob_or_Knob.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-39549-10572_Hob_or_Knob.abc 931 ABC music file with the extracted tune(s)
Tune-39549-10572_Hob_or_Knob.ps 37966 PostScript
Tune-39549-10572_Hob_or_Knob.txt 931 Plain-text file with the extracted tune(s)
Tune-39549-get.log 4754 Log file, useful mostly for debugging
These files should be available for 24 hours.