pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-269-CSR4-abc2.abc -F fmt/pdf_55.fmt +s 0.55 +maxs 2000 )>/Users/jc/w/tmp/Tune-269-CSR4-abc2.ps 2>>/Users/jc/w/tmp/Tune-269-get.log" returned status 35584.
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-269-CSR4-abc2.ps) >>/Users/jc/w/tmp/Tune-269-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR4-abc2.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_26917.log 275011 Log file, useful mostly for debugging
Coll_26964.log 283412 Log file, useful mostly for debugging
Coll_26979.log 356856 Log file, useful mostly for debugging
Tune-269-CSR4-abc2.abc 107205 ABC music file with the extracted tune(s)
Tune-269-CSR4-abc2.ps 399173 PostScript
Tune-269-CSR4-abc2.txt 107205 Plain-text file with the extracted tune(s)
Tune-269-get.log 66234 Log file, useful mostly for debugging
Tune-26902-get.log 2666 Log file, useful mostly for debugging
Tune-26910-get.log 4723 Log file, useful mostly for debugging
Tune-26912-get.log 1293 Log file, useful mostly for debugging
Tune-26926-get.log 3022 Log file, useful mostly for debugging
Tune-26928-get.log 1337 Log file, useful mostly for debugging
Tune-26936-get.log 3423 Log file, useful mostly for debugging
Tune-26937-get.log 1312 Log file, useful mostly for debugging
Tune-26942-get.log 3035 Log file, useful mostly for debugging
Tune-26945-get.log 1339 Log file, useful mostly for debugging
Tune-26951-get.log 1315 Log file, useful mostly for debugging
Tune-26953-get.log 3244 Log file, useful mostly for debugging
Tune-26955-get.log 3295 Log file, useful mostly for debugging
Tune-26961-get.log 5737 Log file, useful mostly for debugging
Tune-26975-get.log 1326 Log file, useful mostly for debugging
Tune-26982-get.log 1257 Log file, useful mostly for debugging
Tune-26986-get.log 5742 Log file, useful mostly for debugging
Tune-26995-get.log 1326 Log file, useful mostly for debugging
Tune-26999-get.log 3354 Log file, useful mostly for debugging
These files should be available for 24 hours.