pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-8907-053_Jock_O_Hazeldean.abc -F fmt/pdf_55.fmt +s 0.55 +maxs 2000 )>/Users/jc/w/tmp/Tune-8907-053_Jock_O_Hazeldean.ps 2>>/Users/jc/w/tmp/Tune-8907-get.log" returned status 34304.
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8907-053_Jock_O_Hazeldean.ps) >>/Users/jc/w/tmp/Tune-8907-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Chappell/053_Jock_O_Hazeldean.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_8907.log 247801 Log file, useful mostly for debugging
Coll_89070.log 144739 Log file, useful mostly for debugging
Coll_89072.log 263256 Log file, useful mostly for debugging
Coll_89073.log 261851 Log file, useful mostly for debugging
Coll_89077.log 268876 Log file, useful mostly for debugging
Form_89071.log 1247 Log file, useful mostly for debugging
Tune-8907-053_Jock_O_Hazeldean.abc 568 ABC music file with the extracted tune(s)
Tune-8907-053_Jock_O_Hazeldean.ps 30545 PostScript
Tune-8907-053_Jock_O_Hazeldean.txt 568 Plain-text file with the extracted tune(s)
Tune-8907-get.log 5553 Log file, useful mostly for debugging
Tune-89070-get.log 3192 Log file, useful mostly for debugging
These files should be available for 24 hours.