pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-26747-15SD.ps) >>/Users/jc/w/tmp/Tune-26747-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/RoyGoldring/15SD.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_26747.log 137967 Log file, useful mostly for debugging
Tune-26747-15SD.abc 1168 ABC music file with the extracted tune(s)
Tune-26747-15SD.ps 40553 PostScript
Tune-26747-15SD.txt 1168 Plain-text file with the extracted tune(s)
Tune-26747-get.log 4171 Log file, useful mostly for debugging
These files should be available for 24 hours.