pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-72536-2110-Garthlands-V1.ps) >>/Users/jc/w/tmp/Tune-72536-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Kerr/MM2/2110-Garthlands-V1.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-72536-2110-Garthlands-V1.abc 598 ABC music file with the extracted tune(s)
Tune-72536-2110-Garthlands-V1.ps 35888 PostScript
Tune-72536-2110-Garthlands-V1.txt 598 Plain-text file with the extracted tune(s)
Tune-72536-24CountryDances_1771_Randall.abc 165 ABC music file with the extracted tune(s)
Tune-72536-24CountryDances_1771_Randall.txt 165 Plain-text file with the extracted tune(s)
Tune-72536-get.log 8129 Log file, useful mostly for debugging
These files should be available for 24 hours.