pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7914-Kerr_MM1-V2.ps) >>/Users/jc/w/tmp/Tune-7914-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM1/Kerr_MM1-V2.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-7914-Kerr_MM1-V2.abc 363 ABC music file with the extracted tune(s)
Tune-7914-Kerr_MM1-V2.ps 33417 PostScript
Tune-7914-Kerr_MM1-V2.txt 363 Plain-text file with the extracted tune(s)
Tune-7914-get.log 89516 Log file, useful mostly for debugging
Tune-79144-BraesOfBreadalbane1stTune.abc 0 ABC music file with the extracted tune(s)
Tune-79144-BraesOfBreadalbane1stTune.txt 0 Plain-text file with the extracted tune(s)
Tune-79144-get.log 3278 Log file, useful mostly for debugging
These files should be available for 24 hours.