pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-17164-tb17.ps) >>/Users/jc/w/tmp/Tune-17164-get.log 2>&1" returned status 256
http://www.nigelgatherer.com/tunes/abc/tb17.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-17164-get.log 4144 Log file, useful mostly for debugging
Tune-17164-tb17.abc 325 ABC music file with the extracted tune(s)
Tune-17164-tb17.ps 34096 PostScript
Tune-17164-tb17.txt 325 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.