pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3017-CircassianCircle0.ps) >>/Users/jc/w/tmp/Tune-3017-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/CircassianCircle0.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_30175.log 535829 Log file, useful mostly for debugging
Tune-3017-CircassianCircle0.abc 1416 ABC music file with the extracted tune(s)
Tune-3017-CircassianCircle0.ps 42520 PostScript
Tune-3017-CircassianCircle0.txt 1416 Plain-text file with the extracted tune(s)
Tune-3017-get.log 5027 Log file, useful mostly for debugging
Tune-30179-PigeonOnTheGate-001.svg 64812 Scalable Vector Graphics format
Tune-30179-PigeonOnTheGate-002.svg 57255 Scalable Vector Graphics format
Tune-30179-PigeonOnTheGate.abc 2288 ABC music file with the extracted tune(s)
Tune-30179-PigeonOnTheGate.txt 2288 Plain-text file with the extracted tune(s)
Tune-30179-get.log 7578 Log file, useful mostly for debugging
These files should be available for 24 hours.