pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-23580-20442-Canadian_Boat_Song-V1.ps) >>/Users/jc/w/tmp/Tune-23580-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ERM/20442-Canadian_Boat_Song-V1.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_23580.log 526512 Log file, useful mostly for debugging
Tune-23580-20442-Canadian_Boat_Song-V1.abc 597 ABC music file with the extracted tune(s)
Tune-23580-20442-Canadian_Boat_Song-V1.ps 34860 PostScript
Tune-23580-20442-Canadian_Boat_Song-V1.txt 597 Plain-text file with the extracted tune(s)
Tune-23580-get.log 10632 Log file, useful mostly for debugging
These files should be available for 24 hours.