pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3431-1172_the_Fir_Trea.ps) >>/Users/jc/w/tmp/Tune-3431-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/1172_the_Fir_Trea.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_34311.log 447210 Log file, useful mostly for debugging
Coll_34313.log 445811 Log file, useful mostly for debugging
Form_34316.log 873 Log file, useful mostly for debugging
Tune-3431-1172_the_Fir_Trea.abc 1020 ABC music file with the extracted tune(s)
Tune-3431-1172_the_Fir_Trea.ps 40926 PostScript
Tune-3431-1172_the_Fir_Trea.txt 1020 Plain-text file with the extracted tune(s)
Tune-3431-get.log 27279 Log file, useful mostly for debugging
Tune-34313-get.log 3228 Log file, useful mostly for debugging
These files should be available for 24 hours.