pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2793-WilliamCampbell_10thBook_1798-V2.ps) >>/Users/jc/w/tmp/Tune-2793-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/WilliamCampbell_10thBook_1798-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_27930.log 444500 Log file, useful mostly for debugging
Tune-2793-WilliamCampbell_10thBook_1798-V2.abc 38006 ABC music file with the extracted tune(s)
Tune-2793-WilliamCampbell_10thBook_1798-V2.ps 270842 PostScript
Tune-2793-WilliamCampbell_10thBook_1798-V2.txt 38006 Plain-text file with the extracted tune(s)
Tune-2793-get.log 23316 Log file, useful mostly for debugging
Tune-27934-get.log 5375 Log file, useful mostly for debugging
Tune-27937-get.log 4245 Log file, useful mostly for debugging
These files should be available for 24 hours.