pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8237-MusiciansCompanionP1-1842-V2.ps) >>/Users/jc/w/tmp/Tune-8237-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP1-1842-V2.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_82379.log 546068 Log file, useful mostly for debugging
Form_82378.log 730 Log file, useful mostly for debugging
Form_82379.log 745 Log file, useful mostly for debugging
Tune-8237-MusiciansCompanionP1-1842-V2.abc 1179 ABC music file with the extracted tune(s)
Tune-8237-MusiciansCompanionP1-1842-V2.ps 46542 PostScript
Tune-8237-MusiciansCompanionP1-1842-V2.txt 1179 Plain-text file with the extracted tune(s)
Tune-8237-get.log 12910 Log file, useful mostly for debugging
Tune-82371-get.log 3481 Log file, useful mostly for debugging
Tune-82373-get.log 3689 Log file, useful mostly for debugging
Tune-82376-get.log 4313 Log file, useful mostly for debugging
Tune-82378-get.log 2692 Log file, useful mostly for debugging
Tune-82379-get.log 3116 Log file, useful mostly for debugging
These files should be available for 24 hours.