pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72831-OVERHILL.ps) >>/Users/jc/w/tmp/Tune-72831-get.log 2>&1" returned status 256
http://sniff.numachi.com/abc/OVERHILL.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_72831.log 261969 Log file, useful mostly for debugging
Tune-72831-OVERHILL.abc 343 ABC music file with the extracted tune(s)
Tune-72831-OVERHILL.ps 35128 PostScript
Tune-72831-OVERHILL.txt 343 Plain-text file with the extracted tune(s)
Tune-72831-get.log 8710 Log file, useful mostly for debugging
These files should be available for 24 hours.