pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5018-21663_PRINCE_CHARLIES_STRATHSPEY.ps) >>/Users/jc/w/tmp/Tune-5018-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21663_PRINCE_CHARLIES_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_50183.log 308216 Log file, useful mostly for debugging
Coll_50189.log 261851 Log file, useful mostly for debugging
Form_50181.log 832 Log file, useful mostly for debugging
Form_50187.log 1906 Log file, useful mostly for debugging
Tune-5018-21663_PRINCE_CHARLIES_STRATHSPEY.abc 707 ABC music file with the extracted tune(s)
Tune-5018-21663_PRINCE_CHARLIES_STRATHSPEY.ps 38474 PostScript
Tune-5018-21663_PRINCE_CHARLIES_STRATHSPEY.txt 707 Plain-text file with the extracted tune(s)
Tune-5018-get.log 4984 Log file, useful mostly for debugging
Tune-50186-get.log 5064 Log file, useful mostly for debugging
Tune-50188-get.log 3806 Log file, useful mostly for debugging
These files should be available for 24 hours.