pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4904-Loughrea_Lasses-Dm-32-8.ps) >>/Users/jc/w/tmp/Tune-4904-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ONeills/air/Loughrea_Lasses-Dm-32-8.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_49044.log 1160601 Log file, useful mostly for debugging
Tune-4904-Loughrea_Lasses-Dm-32-8.abc 828 ABC music file with the extracted tune(s)
Tune-4904-Loughrea_Lasses-Dm-32-8.ps 40993 PostScript
Tune-4904-Loughrea_Lasses-Dm-32-8.txt 828 Plain-text file with the extracted tune(s)
Tune-4904-get.log 4776 Log file, useful mostly for debugging
Tune-49040-get.log 1396 Log file, useful mostly for debugging
Tune-49041-get.log 4741 Log file, useful mostly for debugging
Tune-49048-get.log 4104 Log file, useful mostly for debugging
These files should be available for 24 hours.