pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9755-20471_How_Blest_the_Maid.ps) >>/Users/jc/w/tmp/Tune-9755-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ERM/20471_How_Blest_the_Maid.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_97551.log 263256 Log file, useful mostly for debugging
Coll_97555.log 264661 Log file, useful mostly for debugging
Form_97555.log 826 Log file, useful mostly for debugging
Tune-9755-20471_How_Blest_the_Maid.abc 791 ABC music file with the extracted tune(s)
Tune-9755-20471_How_Blest_the_Maid.ps 40055 PostScript
Tune-9755-20471_How_Blest_the_Maid.txt 791 Plain-text file with the extracted tune(s)
Tune-9755-get.log 4683 Log file, useful mostly for debugging
Tune-97550-get.log 107280 Log file, useful mostly for debugging
Tune-97557-get.log 3539 Log file, useful mostly for debugging
Tune-97558-get.log 7630 Log file, useful mostly for debugging
Tune-97559-get.log 1283 Log file, useful mostly for debugging
These files should be available for 24 hours.