pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-71467-RG_Octomystic.ps) >>/Users/jc/w/tmp/Tune-71467-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/england/RG_Octomystic.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_71467.log 773270 Log file, useful mostly for debugging
Form_71467.log 857 Log file, useful mostly for debugging
Tune-71467-RG_Octomystic.abc 1318 ABC music file with the extracted tune(s)
Tune-71467-RG_Octomystic.ps 35905 PostScript
Tune-71467-RG_Octomystic.txt 1318 Plain-text file with the extracted tune(s)
Tune-71467-get.log 4399 Log file, useful mostly for debugging
These files should be available for 24 hours.