X:56 not found in http://ccepotomac.org/NOVA/Bog Kit/Tunes/bwreels-56.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9693-bwreels-56.ps) >>/Users/jc/w/tmp/Tune-9693-get.log 2>&1" returned status 256
http://ccepotomac.org/NOVA/Bog Kit/Tunes/bwreels-56.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_96930.log 257739 Log file, useful mostly for debugging
Coll_96933.log 128287 Log file, useful mostly for debugging
Coll_96936.log 14256 Log file, useful mostly for debugging
Coll_96937.log 256329 Log file, useful mostly for debugging
Form_9693.log 870 Log file, useful mostly for debugging
Tune-9693-bwreels-56.abc 0 ABC music file with the extracted tune(s)
Tune-9693-bwreels-56.ps 6 PostScript
Tune-9693-bwreels-56.txt 0 Plain-text file with the extracted tune(s)
Tune-9693-get.log 4281 Log file, useful mostly for debugging
Tune-96930-get.log 32739 Log file, useful mostly for debugging
Tune-96932-get.log 4171 Log file, useful mostly for debugging
Tune-96936-get.log 2931 Log file, useful mostly for debugging
These files should be available for 24 hours.