pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5676-Thompson_V2_1758-1765_FTM.ps) >>/Users/jc/w/tmp/Tune-5676-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Thompson_V2_1758-1765_FTM.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_56760.log 478220 Log file, useful mostly for debugging
Coll_56763.log 771865 Log file, useful mostly for debugging
Coll_56764.log 135065 Log file, useful mostly for debugging
Tune-5676-Thompson_V2_1758-1765_FTM.abc 80019 ABC music file with the extracted tune(s)
Tune-5676-Thompson_V2_1758-1765_FTM.ps 738833 PostScript
Tune-5676-Thompson_V2_1758-1765_FTM.txt 80019 Plain-text file with the extracted tune(s)
Tune-5676-get.log 116961 Log file, useful mostly for debugging
Tune-56760-get.log 5435 Log file, useful mostly for debugging
Tune-56761-get.log 4663 Log file, useful mostly for debugging
Tune-56763-get.log 4270 Log file, useful mostly for debugging
Tune-56766-get.log 9268 Log file, useful mostly for debugging
Tune-56769-get.log 7484 Log file, useful mostly for debugging
These files should be available for 24 hours.