pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-51684-bwreels-4.ps) >>/Users/jc/w/tmp/Tune-51684-get.log 2>&1" returned status 256
http://www.novasession.org/Bog Kit/Tunes/bwreels-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
Tune-51684-bwreels-4.abc 333 ABC music file with the extracted tune(s)
Tune-51684-bwreels-4.ps 35892 PostScript
Tune-51684-bwreels-4.txt 333 Plain-text file with the extracted tune(s)
Tune-51684-get.log 4643 Log file, useful mostly for debugging
These files should be available for 24 hours.