pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-12277-106_Slip.ps) >>/Users/jc/w/tmp/Tune-12277-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/EDM/106_Slip.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-12277-106_Slip.abc 220 ABC music file with the extracted tune(s)
Tune-12277-106_Slip.ps 33319 PostScript
Tune-12277-106_Slip.txt 220 Plain-text file with the extracted tune(s)
Tune-12277-get.log 4359 Log file, useful mostly for debugging
These files should be available for 24 hours.