pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-85738-Rondo_in_the_Turnpike_Gate_primo_RH_047_10.ps) >>/Users/jc/w/tmp/Tune-85738-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/montysmaggot.co.uk/Rondo_in_the_Turnpike_Gate_primo_RH_047_10.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_85738.log 24186 Log file, useful mostly for debugging
Form_85738.log 0 Log file, useful mostly for debugging
Tune-85738-Rondo_in_the_Turnpike_Gate_primo_RH_047_10.abc 548 ABC music file with the extracted tune(s)
Tune-85738-Rondo_in_the_Turnpike_Gate_primo_RH_047_10.ps 37612 PostScript
Tune-85738-Rondo_in_the_Turnpike_Gate_primo_RH_047_10.txt 548 Plain-text file with the extracted tune(s)
Tune-85738-get.log 9033 Log file, useful mostly for debugging
These files should be available for 24 hours.