X:0 not found in http://roaringjelly.org/~jc/scand/_4.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6735-_4.ps) >>/Users/jc/w/tmp/Tune-6735-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/scand/_4.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_67357.log 257636 Log file, useful mostly for debugging
Form_67359.log 814 Log file, useful mostly for debugging
Tune-6735-_4.abc 0 ABC music file with the extracted tune(s)
Tune-6735-_4.ps 6 PostScript
Tune-6735-_4.txt 0 Plain-text file with the extracted tune(s)
Tune-6735-get.log 7563 Log file, useful mostly for debugging
Tune-67351-get.log 44951 Log file, useful mostly for debugging
Tune-67352-get.log 9633 Log file, useful mostly for debugging
Tune-67354-get.log 4034 Log file, useful mostly for debugging
Tune-67356-get.log 5903 Log file, useful mostly for debugging
Tune-67357-get.log 1590 Log file, useful mostly for debugging
Tune-67358-get.log 1387 Log file, useful mostly for debugging
These files should be available for 24 hours.