pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-83981-Glen_Grant_2-A-16-4.ps) >>/Users/jc/w/tmp/Tune-83981-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/strathspey/Glen_Grant_2-A-16-4.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_83981.log 136757 Log file, useful mostly for debugging
Tune-83981-Glen_Grant_2-A-16-4.abc 556 ABC music file with the extracted tune(s)
Tune-83981-Glen_Grant_2-A-16-4.ps 38947 PostScript
Tune-83981-Glen_Grant_2-A-16-4.txt 556 Plain-text file with the extracted tune(s)
Tune-83981-get.log 4845 Log file, useful mostly for debugging
These files should be available for 24 hours.