pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3457-3243_Comely_Garden.ps) >>/Users/jc/w/tmp/Tune-3457-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/3243_Comely_Garden.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_34571.log 1152620 Log file, useful mostly for debugging
Coll_34576.log 1817706 Log file, useful mostly for debugging
Coll_34577.log 1415356 Log file, useful mostly for debugging
Form_3457.log 869 Log file, useful mostly for debugging
Tune-3457-3243_Comely_Garden.abc 798 ABC music file with the extracted tune(s)
Tune-3457-3243_Comely_Garden.ps 38174 PostScript
Tune-3457-3243_Comely_Garden.txt 798 Plain-text file with the extracted tune(s)
Tune-3457-get.log 4581 Log file, useful mostly for debugging
Tune-34576-get.log 1570 Log file, useful mostly for debugging
Tune-34578-get.log 3818 Log file, useful mostly for debugging
These files should be available for 24 hours.