pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4872-Sevcovsky-C-32-4.ps) >>/Users/jc/w/tmp/Tune-4872-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/Intl/Sevcovsky/Sevcovsky-C-32-4.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_4872.log 134942 Log file, useful mostly for debugging
Coll_48723.log 257739 Log file, useful mostly for debugging
Find_48725.log 1393 Log file, useful mostly for debugging
Tune-4872-Sevcovsky-C-32-4.abc 664 ABC music file with the extracted tune(s)
Tune-4872-Sevcovsky-C-32-4.ps 35395 PostScript
Tune-4872-Sevcovsky-C-32-4.txt 664 Plain-text file with the extracted tune(s)
Tune-4872-get.log 4940 Log file, useful mostly for debugging
Tune-48725-get.log 3034 Log file, useful mostly for debugging
Tune-48728-get.log 1664 Log file, useful mostly for debugging
Tune-48729-get.log 3946 Log file, useful mostly for debugging
These files should be available for 24 hours.