pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-45163-HUTB2-1846-V1.ps) >>/Users/jc/w/tmp/Tune-45163-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Hamilton/HUTB2/HUTB2-1846-V1.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_45163.log 62834 Log file, useful mostly for debugging
Tune-45163-HUTB2-1846-V1.abc 535 ABC music file with the extracted tune(s)
Tune-45163-HUTB2-1846-V1.ps 34356 PostScript
Tune-45163-HUTB2-1846-V1.txt 535 Plain-text file with the extracted tune(s)
Tune-45163-get.log 4461 Log file, useful mostly for debugging
These files should be available for 24 hours.