pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6981-4266_No_sure.ps) >>/Users/jc/w/tmp/Tune-6981-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/ACMV/4266_No_sure.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_69811.log 261851 Log file, useful mostly for debugging
Coll_69815.log 494420 Log file, useful mostly for debugging
Form_69815.log 834 Log file, useful mostly for debugging
Form_69816.log 840 Log file, useful mostly for debugging
Tune-6981-4266_No_sure.abc 945 ABC music file with the extracted tune(s)
Tune-6981-4266_No_sure.ps 38768 PostScript
Tune-6981-4266_No_sure.txt 945 Plain-text file with the extracted tune(s)
Tune-6981-get.log 4418 Log file, useful mostly for debugging
Tune-69812-get.log 7693 Log file, useful mostly for debugging
Tune-69815-get.log 3640 Log file, useful mostly for debugging
Tune-69816-10341_WILLIAM_TELL_Rondo.abc 1027 ABC music file with the extracted tune(s)
Tune-69816-10341_WILLIAM_TELL_Rondo.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-69816-10341_WILLIAM_TELL_Rondo.ps 43086 PostScript
Tune-69816-10341_WILLIAM_TELL_Rondo.txt 1027 Plain-text file with the extracted tune(s)
Tune-69816-get.log 5595 Log file, useful mostly for debugging
Tune-69819-get.log 178137 Log file, useful mostly for debugging
These files should be available for 24 hours.