pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9984-033_Barley_Mow.ps) >>/Users/jc/w/tmp/Tune-9984-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/JeanWhite/100_Popular_HRJCD/033_Barley_Mow.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_99849.log 631366 Log file, useful mostly for debugging
Tune-9984-033_Barley_Mow.abc 766 ABC music file with the extracted tune(s)
Tune-9984-033_Barley_Mow.ps 36939 PostScript
Tune-9984-033_Barley_Mow.txt 766 Plain-text file with the extracted tune(s)
Tune-9984-get.log 4644 Log file, useful mostly for debugging
Tune-99842-Woodycock_1651_PLFD1_105_CP.abc 391 ABC music file with the extracted tune(s)
Tune-99842-Woodycock_1651_PLFD1_105_CP.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-99842-Woodycock_1651_PLFD1_105_CP.ps 32694 PostScript
Tune-99842-Woodycock_1651_PLFD1_105_CP.txt 391 Plain-text file with the extracted tune(s)
Tune-99842-get.log 6305 Log file, useful mostly for debugging
Tune-99849-20751_Suisesse_du_Bord_du_Lac.abc 889 ABC music file with the extracted tune(s)
Tune-99849-20751_Suisesse_du_Bord_du_Lac.txt 889 Plain-text file with the extracted tune(s)
Tune-99849-get.log 3471 Log file, useful mostly for debugging
These files should be available for 24 hours.