pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7162-Graces_Farewell_1.ps) >>/Users/jc/w/tmp/Tune-7162-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/kirby98.fsnet.co.uk/gr/Graces_Farewell_1.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_71625.log 146437 Log file, useful mostly for debugging
Coll_71626.log 260559 Log file, useful mostly for debugging
Form_71621.log 857 Log file, useful mostly for debugging
Tune-7162-Graces_Farewell_1.abc 236 ABC music file with the extracted tune(s)
Tune-7162-Graces_Farewell_1.ps 35213 PostScript
Tune-7162-Graces_Farewell_1.txt 236 Plain-text file with the extracted tune(s)
Tune-7162-get.log 4558 Log file, useful mostly for debugging
Tune-71628-get.log 3936 Log file, useful mostly for debugging
These files should be available for 24 hours.