pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1254-HallingFranGunnarskog.ps) >>/Users/jc/w/tmp/Tune-1254-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/scand/HallingFranGunnarskog.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_12541.log 955557 Log file, useful mostly for debugging
Coll_12542.log 355985 Log file, useful mostly for debugging
Coll_12544.log 858094 Log file, useful mostly for debugging
Form_12543.log 864 Log file, useful mostly for debugging
Form_12545.log 978 Log file, useful mostly for debugging
Tune-1254-HallingFranGunnarskog.abc 767 ABC music file with the extracted tune(s)
Tune-1254-HallingFranGunnarskog.ps 36895 PostScript
Tune-1254-HallingFranGunnarskog.txt 767 Plain-text file with the extracted tune(s)
Tune-1254-get.log 4602 Log file, useful mostly for debugging
Tune-12545-get.log 173862 Log file, useful mostly for debugging
Tune-12549-get.log 3923 Log file, useful mostly for debugging
These files should be available for 24 hours.