pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-91083-1036_Captain_Digbys_Farewel.ps) >>/Users/jc/w/tmp/Tune-91083-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/AB/1036_Captain_Digbys_Farewel.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-91083-1036_Captain_Digbys_Farewel.abc 587 ABC music file with the extracted tune(s)
Tune-91083-1036_Captain_Digbys_Farewel.ps 33629 PostScript
Tune-91083-1036_Captain_Digbys_Farewel.txt 587 Plain-text file with the extracted tune(s)
Tune-91083-get.log 4857 Log file, useful mostly for debugging
These files should be available for 24 hours.