Mismatch: X:18 doesn't match requested X:17
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9887-James_Scott_Skinner.ps) >>/Users/jc/w/tmp/Tune-9887-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/by/James_Scott_Skinner.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-9887-James_Scott_Skinner.abc 773 ABC music file with the extracted tune(s)
Tune-9887-James_Scott_Skinner.ps 37806 PostScript
Tune-9887-James_Scott_Skinner.txt 773 Plain-text file with the extracted tune(s)
Tune-9887-get.log 75512 Log file, useful mostly for debugging
Tune-98875-Morag_of_Dunvegan-D-32-4-001.svg 14967 Scalable Vector Graphics format
Tune-98875-Morag_of_Dunvegan-D-32-4.abc 494 ABC music file with the extracted tune(s)
Tune-98875-Morag_of_Dunvegan-D-32-4.txt 494 Plain-text file with the extracted tune(s)
Tune-98875-get.log 4351 Log file, useful mostly for debugging
These files should be available for 24 hours.