pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-776-10462_Humors_or_Tipperary.ps) >>/Users/jc/w/tmp/Tune-776-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/EliasHowe/MusiciansCompanionP1/10462_Humors_or_Tipperary.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_77619.log 289012 Log file, useful mostly for debugging
Coll_77643.log 286210 Log file, useful mostly for debugging
Coll_77661.log 287609 Log file, useful mostly for debugging
Coll_77666.log 289011 Log file, useful mostly for debugging
Find_77602.log 1773 Log file, useful mostly for debugging
Find_77688.log 1575 Log file, useful mostly for debugging
Tune-776-10462_Humors_or_Tipperary.abc 778 ABC music file with the extracted tune(s)
Tune-776-10462_Humors_or_Tipperary.ps 37179 PostScript
Tune-776-10462_Humors_or_Tipperary.txt 778 Plain-text file with the extracted tune(s)
Tune-776-get.log 5133 Log file, useful mostly for debugging
Tune-77606-get.log 1432 Log file, useful mostly for debugging
Tune-77608-get.log 5207 Log file, useful mostly for debugging
Tune-77614-get.log 1432 Log file, useful mostly for debugging
Tune-77626-get.log 5178 Log file, useful mostly for debugging
Tune-77633-get.log 1274 Log file, useful mostly for debugging
Tune-77639-get.log 1399 Log file, useful mostly for debugging
Tune-77643-get.log 5265 Log file, useful mostly for debugging
Tune-77655-get.log 1454 Log file, useful mostly for debugging
Tune-77662-get.log 1308 Log file, useful mostly for debugging
Tune-77672-get.log 5031 Log file, useful mostly for debugging
Tune-77683-get.log 1392 Log file, useful mostly for debugging
Tune-77689-get.log 1392 Log file, useful mostly for debugging
Tune-7769-get.log 1378 Log file, useful mostly for debugging
Tune-77690-get.log 5035 Log file, useful mostly for debugging
Tune-77698-get.log 1362 Log file, useful mostly for debugging
These files should be available for 24 hours.