pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-50588-3104_the_Yetts_of_Muckart.ps) >>/Users/jc/w/tmp/Tune-50588-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM3/3104_the_Yetts_of_Muckart.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_50588.log 1423 Log file, useful mostly for debugging
Tune-50588-3104_the_Yetts_of_Muckart.abc 436 ABC music file with the extracted tune(s)
Tune-50588-3104_the_Yetts_of_Muckart.ps 34485 PostScript
Tune-50588-3104_the_Yetts_of_Muckart.txt 436 Plain-text file with the extracted tune(s)
Tune-50588-get.log 4816 Log file, useful mostly for debugging
These files should be available for 24 hours.