pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-19496-1091_Amboyna.ps) >>/Users/jc/w/tmp/Tune-19496-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/AB/1091_Amboyna.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-19496-1091_Amboyna.abc 635 ABC music file with the extracted tune(s)
Tune-19496-1091_Amboyna.ps 34561 PostScript
Tune-19496-1091_Amboyna.txt 635 Plain-text file with the extracted tune(s)
Tune-19496-get.log 8589 Log file, useful mostly for debugging
These files should be available for 24 hours.