pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6619-GlenGrant.ps) >>/Users/jc/w/tmp/Tune-6619-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/GlenGrant.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_66193.log 259449 Log file, useful mostly for debugging
Tune-6619-GlenGrant.abc 837 ABC music file with the extracted tune(s)
Tune-6619-GlenGrant.ps 36406 PostScript
Tune-6619-GlenGrant.txt 837 Plain-text file with the extracted tune(s)
Tune-6619-get.log 5837 Log file, useful mostly for debugging
Tune-66194-get.log 3572 Log file, useful mostly for debugging
These files should be available for 24 hours.