pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8880-hpps.ps) >>/Users/jc/w/tmp/Tune-8880-get.log 2>&1" returned status 256
http://abc.sourceforge.net/NMD/nmd/hpps.txt

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_88803.log 275119 Log file, useful mostly for debugging
Coll_88807.log 63374 Log file, useful mostly for debugging
Form_88801.log 743 Log file, useful mostly for debugging
Form_88803.log 776 Log file, useful mostly for debugging
Form_88808.log 751 Log file, useful mostly for debugging
Form_88809.log 757 Log file, useful mostly for debugging
Tune-8880-get.log 6974 Log file, useful mostly for debugging
Tune-8880-hpps.abc 377 ABC music file with the extracted tune(s)
Tune-8880-hpps.ps 36123 PostScript
Tune-8880-hpps.txt 377 Plain-text file with the extracted tune(s)
Tune-88800-Alltshellach.abc 613 ABC music file with the extracted tune(s)
Tune-88800-Alltshellach.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-88800-Alltshellach.ps 38775 PostScript
Tune-88800-Alltshellach.txt 613 Plain-text file with the extracted tune(s)
Tune-88800-get.log 113936 Log file, useful mostly for debugging
Tune-88801-get.log 3121 Log file, useful mostly for debugging
Tune-88802-get.log 5372 Log file, useful mostly for debugging
Tune-88804-get.log 93659 Log file, useful mostly for debugging
Tune-88807-get.log 7406 Log file, useful mostly for debugging
Tune-88809-get.log 3143 Log file, useful mostly for debugging
These files should be available for 24 hours.