pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90927-DullSirJohn_PLFD1651_023.ps) >>/Users/jc/w/tmp/Tune-90927-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/DullSirJohn_PLFD1651_023.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-90927-DullSirJohn_PLFD1651_023.abc 400 ABC music file with the extracted tune(s)
Tune-90927-DullSirJohn_PLFD1651_023.ps 33620 PostScript
Tune-90927-DullSirJohn_PLFD1651_023.txt 400 Plain-text file with the extracted tune(s)
Tune-90927-LadiesMisfortuneThe_PLFD1702_489.abc 486 ABC music file with the extracted tune(s)
Tune-90927-LadiesMisfortuneThe_PLFD1702_489.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-90927-LadiesMisfortuneThe_PLFD1702_489.ps 35669 PostScript
Tune-90927-LadiesMisfortuneThe_PLFD1702_489.txt 486 Plain-text file with the extracted tune(s)
Tune-90927-get.log 10655 Log file, useful mostly for debugging
These files should be available for 24 hours.