pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3094-hpps.ps) >>/Users/jc/w/tmp/Tune-3094-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/ifdo.pugmarks.com/~seymour/nottingham/hpps.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_30941.log 130707 Log file, useful mostly for debugging
Coll_30944.log 47 Log file, useful mostly for debugging
Coll_30945.log 146437 Log file, useful mostly for debugging
Coll_30947.log 1056601 Log file, useful mostly for debugging
Tune-3094-get.log 4321 Log file, useful mostly for debugging
Tune-3094-hpps.abc 208 ABC music file with the extracted tune(s)
Tune-3094-hpps.ps 32794 PostScript
Tune-3094-hpps.txt 208 Plain-text file with the extracted tune(s)
Tune-30943-get.log 4180 Log file, useful mostly for debugging
Tune-30945-get.log 3205 Log file, useful mostly for debugging
These files should be available for 24 hours.