pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-29703-10931_P_BILLIES_STRATHSPEY.ps) >>/Users/jc/w/tmp/Tune-29703-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/10931_P_BILLIES_STRATHSPEY.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_29703.log 266066 Log file, useful mostly for debugging
Form_29703.log 1952 Log file, useful mostly for debugging
Tune-29703-10931_P_BILLIES_STRATHSPEY.abc 838 ABC music file with the extracted tune(s)
Tune-29703-10931_P_BILLIES_STRATHSPEY.ps 42317 PostScript
Tune-29703-10931_P_BILLIES_STRATHSPEY.txt 838 Plain-text file with the extracted tune(s)
Tune-29703-get.log 4847 Log file, useful mostly for debugging
These files should be available for 24 hours.