pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-44862-Bonnie_Lass_o_Bon_Accord_2-A-32-3.ps) >>/Users/jc/w/tmp/Tune-44862-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/air/Bonnie_Lass_o_Bon_Accord_2-A-32-3.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
Tune-44862-Bonnie_Lass_o_Bon_Accord_2-A-32-3.abc 840 ABC music file with the extracted tune(s)
Tune-44862-Bonnie_Lass_o_Bon_Accord_2-A-32-3.ps 37582 PostScript
Tune-44862-Bonnie_Lass_o_Bon_Accord_2-A-32-3.txt 840 Plain-text file with the extracted tune(s)
Tune-44862-get.log 4803 Log file, useful mostly for debugging
These files should be available for 24 hours.