pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5099-WeddingDayWaltz.ps) >>/Users/jc/w/tmp/Tune-5099-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/england/WeddingDayWaltz.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_5099.log 348960 Log file, useful mostly for debugging
Coll_50990.log 406565 Log file, useful mostly for debugging
Coll_50991.log 132483 Log file, useful mostly for debugging
Form_5099.log 1091 Log file, useful mostly for debugging
Form_50991.log 813 Log file, useful mostly for debugging
Form_50997.log 813 Log file, useful mostly for debugging
Tune-5099-WeddingDayWaltz.abc 889 ABC music file with the extracted tune(s)
Tune-5099-WeddingDayWaltz.ps 35336 PostScript
Tune-5099-WeddingDayWaltz.txt 889 Plain-text file with the extracted tune(s)
Tune-5099-get.log 4452 Log file, useful mostly for debugging
Tune-50991-Kildare_Fancy-D-32-4.abc 586 ABC music file with the extracted tune(s)
Tune-50991-Kildare_Fancy-D-32-4.txt 586 Plain-text file with the extracted tune(s)
Tune-50991-get.log 4110 Log file, useful mostly for debugging
Tune-50996-get.log 1440 Log file, useful mostly for debugging
Tune-50997-get.log 6326 Log file, useful mostly for debugging
Tune-50998-get.log 4109 Log file, useful mostly for debugging
These files should be available for 24 hours.