pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3953-Sevcovsky-C-32-3.ps) >>/Users/jc/w/tmp/Tune-3953-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/Intl/Sevcovsky/Sevcovsky-C-32-3.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_39534.log 142807 Log file, useful mostly for debugging
Form_39532.log 813 Log file, useful mostly for debugging
Tune-3953-Sevcovsky-C-32-3.abc 590 ABC music file with the extracted tune(s)
Tune-3953-Sevcovsky-C-32-3.ps 34814 PostScript
Tune-3953-Sevcovsky-C-32-3.txt 590 Plain-text file with the extracted tune(s)
Tune-3953-get.log 8576 Log file, useful mostly for debugging
Tune-39531-get.log 4251 Log file, useful mostly for debugging
Tune-39534-get.log 1510 Log file, useful mostly for debugging
Tune-39537-get.log 1573 Log file, useful mostly for debugging
Tune-39538-get.log 3900 Log file, useful mostly for debugging
These files should be available for 24 hours.