pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-95910-Raven_Haired_Lass.ps) >>/Users/jc/w/tmp/Tune-95910-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/program/Raven_Haired_Lass.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_95910.log 257739 Log file, useful mostly for debugging
Tune-95910-Raven_Haired_Lass.abc 498 ABC music file with the extracted tune(s)
Tune-95910-Raven_Haired_Lass.ps 36475 PostScript
Tune-95910-Raven_Haired_Lass.txt 498 Plain-text file with the extracted tune(s)
Tune-95910-get.log 4474 Log file, useful mostly for debugging
These files should be available for 24 hours.