pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-67500-36060-Argyll_Ludging_AL.ps) >>/Users/jc/w/tmp/Tune-67500-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book36/36060-Argyll_Ludging_AL.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-67500-36060-Argyll_Ludging_AL.abc 631 ABC music file with the extracted tune(s)
Tune-67500-36060-Argyll_Ludging_AL.ps 39423 PostScript
Tune-67500-36060-Argyll_Ludging_AL.txt 631 Plain-text file with the extracted tune(s)
Tune-67500-get.log 4721 Log file, useful mostly for debugging
These files should be available for 24 hours.