pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-98426-2294-Capt_Kennedys_Reel.ps) >>/Users/jc/w/tmp/Tune-98426-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/2294-Capt_Kennedys_Reel.abc1.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_98426.log 1092205 Log file, useful mostly for debugging
Tune-98426-2294-Capt_Kennedys_Reel.abc 953 ABC music file with the extracted tune(s)
Tune-98426-2294-Capt_Kennedys_Reel.ps 37819 PostScript
Tune-98426-2294-Capt_Kennedys_Reel.txt 953 Plain-text file with the extracted tune(s)
Tune-98426-get.log 4753 Log file, useful mostly for debugging
These files should be available for 24 hours.