pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4749-more_Tunes.ps) >>/Users/jc/w/tmp/Tune-4749-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/ceolas.org/more_Tunes.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
Coll_47490.log 264789 Log file, useful mostly for debugging
Find_47499.log 1595 Log file, useful mostly for debugging
Form_47493.log 0 Log file, useful mostly for debugging
Form_47499.log 0 Log file, useful mostly for debugging
Tune-4749-get.log 8996 Log file, useful mostly for debugging
Tune-4749-more_Tunes.abc 454 ABC music file with the extracted tune(s)
Tune-4749-more_Tunes.ps 40921 PostScript
Tune-4749-more_Tunes.txt 454 Plain-text file with the extracted tune(s)
Tune-47497-get.log 2993 Log file, useful mostly for debugging
These files should be available for 24 hours.