pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-30964-031_Bevis_Mount.ps) >>/Users/jc/w/tmp/Tune-30964-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Straight_Skillern/031_Bevis_Mount.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_30964.log 726025 Log file, useful mostly for debugging
Tune-30964-031_Bevis_Mount.abc 1056 ABC music file with the extracted tune(s)
Tune-30964-031_Bevis_Mount.ps 36000 PostScript
Tune-30964-031_Bevis_Mount.txt 1056 Plain-text file with the extracted tune(s)
Tune-30964-get.log 10358 Log file, useful mostly for debugging
These files should be available for 24 hours.