pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2224-hpps.ps) >>/Users/jc/w/tmp/Tune-2224-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/redhawk.org/nmd/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_22243.log 139177 Log file, useful mostly for debugging
Find_22246.log 1499 Log file, useful mostly for debugging
Form_22242.log 1658 Log file, useful mostly for debugging
Tune-2224-get.log 8169 Log file, useful mostly for debugging
Tune-2224-hpps.abc 0 ABC music file with the extracted tune(s)
Tune-2224-hpps.ps 0 PostScript
Tune-2224-hpps.txt 0 Plain-text file with the extracted tune(s)
Tune-22240-get.log 3463 Log file, useful mostly for debugging
Tune-22241-get.log 3936 Log file, useful mostly for debugging
Tune-22246-get.log 0 Log file, useful mostly for debugging
Tune-22247-get.log 5201 Log file, useful mostly for debugging
Tune-22248-get.log 6999 Log file, useful mostly for debugging
These files should be available for 24 hours.