pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3664-732_Myrtle.ps) >>/Users/jc/w/tmp/Tune-3664-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/DftY/1779/Thompson/732_Myrtle.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_36640.log 568662 Log file, useful mostly for debugging
Coll_36645.log 291355 Log file, useful mostly for debugging
Coll_36649.log 156349 Log file, useful mostly for debugging
Tune-3664-732_Myrtle.abc 773 ABC music file with the extracted tune(s)
Tune-3664-732_Myrtle.ps 33204 PostScript
Tune-3664-732_Myrtle.txt 773 Plain-text file with the extracted tune(s)
Tune-3664-get.log 8713 Log file, useful mostly for debugging
Tune-36643-get.log 4041 Log file, useful mostly for debugging
Tune-36645-get.log 4696 Log file, useful mostly for debugging
Tune-36646-get.log 4365 Log file, useful mostly for debugging
Tune-36647-get.log 5634 Log file, useful mostly for debugging
These files should be available for 24 hours.