pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7017-P-waltz.ps) >>/Users/jc/w/tmp/Tune-7017-get.log 2>&1" returned status 256
http://www.thisoldtractor.com/guzzi007/Scottish_Tome/P-waltz.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
Form_70175.log 767 Log file, useful mostly for debugging
Tune-7017-P-waltz.abc 340 ABC music file with the extracted tune(s)
Tune-7017-P-waltz.ps 33451 PostScript
Tune-7017-P-waltz.txt 340 Plain-text file with the extracted tune(s)
Tune-7017-get.log 4233 Log file, useful mostly for debugging
Tune-70172-get.log 36257 Log file, useful mostly for debugging
Tune-70172-hnr2.abc 320 ABC music file with the extracted tune(s)
Tune-70172-hnr2.txt 320 Plain-text file with the extracted tune(s)
Tune-70173-get.log 7791 Log file, useful mostly for debugging
Tune-70174-get.log 7013 Log file, useful mostly for debugging
These files should be available for 24 hours.