pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-42884-VCB4.ps) >>/Users/jc/w/tmp/Tune-42884-get.log 2>&1" returned status 256
http://jjaquier.free.fr/midifiles/abc/abc/VCB4.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_42884.log 276509 Log file, useful mostly for debugging
Tune-42884-VCB4.abc 1022 ABC music file with the extracted tune(s)
Tune-42884-VCB4.ps 48474 PostScript
Tune-42884-VCB4.txt 1022 Plain-text file with the extracted tune(s)
Tune-42884-get.log 8375 Log file, useful mostly for debugging
These files should be available for 24 hours.