pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7795-0312_WALTZ.ps) >>/Users/jc/w/tmp/Tune-7795-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/BostonCollection/0312_WALTZ.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-7795-0312_WALTZ.abc 966 ABC music file with the extracted tune(s)
Tune-7795-0312_WALTZ.ps 41354 PostScript
Tune-7795-0312_WALTZ.txt 966 Plain-text file with the extracted tune(s)
Tune-7795-get.log 4527 Log file, useful mostly for debugging
Tune-77950-get.log 1398 Log file, useful mostly for debugging
Tune-77951-AMHSI_abc1.abc 147 ABC music file with the extracted tune(s)
Tune-77951-AMHSI_abc1.ps 6 PostScript
Tune-77951-AMHSI_abc1.txt 147 Plain-text file with the extracted tune(s)
Tune-77951-get.log 4116 Log file, useful mostly for debugging
Tune-77954-get.log 4592 Log file, useful mostly for debugging
Tune-77957-get.log 1398 Log file, useful mostly for debugging
Tune-77958-RobertBremner_CSRCD2.abc 157 ABC music file with the extracted tune(s)
Tune-77958-RobertBremner_CSRCD2.txt 157 Plain-text file with the extracted tune(s)
Tune-77958-get.log 9677 Log file, useful mostly for debugging
These files should be available for 24 hours.