pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-54853-10874_Soldiers_Dance.ps) >>/Users/jc/w/tmp/Tune-54853-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Hamilton/HUTB1/10874_Soldiers_Dance.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-54853-10874_Soldiers_Dance.abc 607 ABC music file with the extracted tune(s)
Tune-54853-10874_Soldiers_Dance.ps 33860 PostScript
Tune-54853-10874_Soldiers_Dance.txt 607 Plain-text file with the extracted tune(s)
Tune-54853-get.log 5063 Log file, useful mostly for debugging
These files should be available for 24 hours.