pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85893-4021-the_Days_o_Yore.ps) >>/Users/jc/w/tmp/Tune-85893-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/4021-the_Days_o_Yore.abc1.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_85893.log 252016 Log file, useful mostly for debugging
Tune-85893-4021-the_Days_o_Yore.abc 1080 ABC music file with the extracted tune(s)
Tune-85893-4021-the_Days_o_Yore.ps 39946 PostScript
Tune-85893-4021-the_Days_o_Yore.txt 1080 Plain-text file with the extracted tune(s)
Tune-85893-get.log 4669 Log file, useful mostly for debugging
These files should be available for 24 hours.