pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-76575-Mr_Charles_Grahams_Welcome_Home_Am3.ps) >>/Users/jc/w/tmp/Tune-76575-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/by/William_Gow/Mr_Charles_Grahams_Welcome_Home_Am3.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_76575.log 267609 Log file, useful mostly for debugging
Tune-76575-Mr_Charles_Grahams_Welcome_Home_Am3.abc 460 ABC music file with the extracted tune(s)
Tune-76575-Mr_Charles_Grahams_Welcome_Home_Am3.ps 35729 PostScript
Tune-76575-Mr_Charles_Grahams_Welcome_Home_Am3.txt 460 Plain-text file with the extracted tune(s)
Tune-76575-get.log 4998 Log file, useful mostly for debugging
These files should be available for 24 hours.