pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-34439-006_Bonnie_Prince_Charlie.ps) >>/Users/jc/w/tmp/Tune-34439-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Chappell/006_Bonnie_Prince_Charlie.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-34439-006_Bonnie_Prince_Charlie.abc 696 ABC music file with the extracted tune(s)
Tune-34439-006_Bonnie_Prince_Charlie.ps 39513 PostScript
Tune-34439-006_Bonnie_Prince_Charlie.txt 696 Plain-text file with the extracted tune(s)
Tune-34439-get.log 4866 Log file, useful mostly for debugging
These files should be available for 24 hours.