pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-95121-871_Trip_to_Easton.ps) >>/Users/jc/w/tmp/Tune-95121-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1780/Thompson/871_Trip_to_Easton.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_95121.log 288545 Log file, useful mostly for debugging
Tune-95121-871_Trip_to_Easton.abc 973 ABC music file with the extracted tune(s)
Tune-95121-871_Trip_to_Easton.ps 34917 PostScript
Tune-95121-871_Trip_to_Easton.txt 973 Plain-text file with the extracted tune(s)
Tune-95121-get.log 4675 Log file, useful mostly for debugging
These files should be available for 24 hours.