pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-25264-10292_.ps) >>/Users/jc/w/tmp/Tune-25264-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP1/10292_.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_25264.log 286211 Log file, useful mostly for debugging
Tune-25264-10292_.abc 33 ABC music file with the extracted tune(s)
Tune-25264-10292_.ps 6 PostScript
Tune-25264-10292_.txt 33 Plain-text file with the extracted tune(s)
Tune-25264-get.log 3948 Log file, useful mostly for debugging
These files should be available for 24 hours.