pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5683-EliasHowe_MusiciansCompanionP1-1842-V2.ps) >>/Users/jc/w/tmp/Tune-5683-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe_MusiciansCompanionP1-1842-V2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_56838.log 124333 Log file, useful mostly for debugging
Tune-5683-EliasHowe_MusiciansCompanionP1-1842-V2.abc 297553 ABC music file with the extracted tune(s)
Tune-5683-EliasHowe_MusiciansCompanionP1-1842-V2.ps 2542747 PostScript
Tune-5683-EliasHowe_MusiciansCompanionP1-1842-V2.txt 297553 Plain-text file with the extracted tune(s)
Tune-5683-get.log 216493 Log file, useful mostly for debugging
Tune-56832-get.log 5639 Log file, useful mostly for debugging
Tune-56833-get.log 5168 Log file, useful mostly for debugging
Tune-56834-get.log 8755 Log file, useful mostly for debugging
Tune-56836-ERM-V1.abc 810 ABC music file with the extracted tune(s)
Tune-56836-ERM-V1.ps 40591 PostScript
Tune-56836-ERM-V1.txt 810 Plain-text file with the extracted tune(s)
Tune-56836-get.log 87527 Log file, useful mostly for debugging
These files should be available for 24 hours.