pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-94860-KarinsStrathspey0.ps) >>/Users/jc/w/tmp/Tune-94860-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/KarinsStrathspey0.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
Tune-94860-KarinsStrathspey0.abc 594 ABC music file with the extracted tune(s)
Tune-94860-KarinsStrathspey0.ps 35906 PostScript
Tune-94860-KarinsStrathspey0.txt 594 Plain-text file with the extracted tune(s)
Tune-94860-get.log 10076 Log file, useful mostly for debugging
Tune-94860-williamclarke_tunes.abc 279 ABC music file with the extracted tune(s)
Tune-94860-williamclarke_tunes.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-94860-williamclarke_tunes.ps 33690 PostScript
Tune-94860-williamclarke_tunes.txt 279 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.