pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7012-SuccessfulCampaign.ps) >>/Users/jc/w/tmp/Tune-7012-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/england/SuccessfulCampaign.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_70127.log 284330 Log file, useful mostly for debugging
Tune-7012-SuccessfulCampaign.abc 1000 ABC music file with the extracted tune(s)
Tune-7012-SuccessfulCampaign.ps 39384 PostScript
Tune-7012-SuccessfulCampaign.txt 1000 Plain-text file with the extracted tune(s)
Tune-7012-get.log 4557 Log file, useful mostly for debugging
Tune-70121-Terpsicourante.abc 1388 ABC music file with the extracted tune(s)
Tune-70121-Terpsicourante.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-70121-Terpsicourante.ps 46421 PostScript
Tune-70121-Terpsicourante.txt 1388 Plain-text file with the extracted tune(s)
Tune-70121-get.log 10388 Log file, useful mostly for debugging
Tune-70126-get.log 5041 Log file, useful mostly for debugging
Tune-70127-get.log 5803 Log file, useful mostly for debugging
Tune-70129-get.log 3919 Log file, useful mostly for debugging
These files should be available for 24 hours.