pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7923-Robert_Cormack_Aberdeen.ps) >>/Users/jc/w/tmp/Tune-7923-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/air/Robert_Cormack_Aberdeen.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_79230.log 130707 Log file, useful mostly for debugging
Coll_79234.log 253509 Log file, useful mostly for debugging
Coll_79237.log 257739 Log file, useful mostly for debugging
Tune-7923-Robert_Cormack_Aberdeen.abc 718 ABC music file with the extracted tune(s)
Tune-7923-Robert_Cormack_Aberdeen.ps 39986 PostScript
Tune-7923-Robert_Cormack_Aberdeen.txt 718 Plain-text file with the extracted tune(s)
Tune-7923-get.log 4557 Log file, useful mostly for debugging
These files should be available for 24 hours.