pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-84833-20_Bess-Bell.ps) >>/Users/jc/w/tmp/Tune-84833-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Playford/COST/20_Bess-Bell.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Form_84833.log 937 Log file, useful mostly for debugging
Tune-84833-20_Bess-Bell.abc 734 ABC music file with the extracted tune(s)
Tune-84833-20_Bess-Bell.ps 34636 PostScript
Tune-84833-20_Bess-Bell.txt 734 Plain-text file with the extracted tune(s)
Tune-84833-get.log 4468 Log file, useful mostly for debugging
These files should be available for 24 hours.