pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-99154-30222_London_March.ps) >>/Users/jc/w/tmp/Tune-99154-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP3/30222_London_March.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_99154.log 526512 Log file, useful mostly for debugging
Form_99154.log 954 Log file, useful mostly for debugging
Tune-99154-30222_London_March.abc 771 ABC music file with the extracted tune(s)
Tune-99154-30222_London_March.ps 36134 PostScript
Tune-99154-30222_London_March.txt 771 Plain-text file with the extracted tune(s)
Tune-99154-all.abc 176 ABC music file with the extracted tune(s)
Tune-99154-all.txt 176 Plain-text file with the extracted tune(s)
Tune-99154-get.log 8017 Log file, useful mostly for debugging
These files should be available for 24 hours.