pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-89046-CotteyHouse_PLFD1702_481.ps) >>/Users/jc/w/tmp/Tune-89046-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/CotteyHouse_PLFD1702_481.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-89046-CotteyHouse_PLFD1702_481.abc 405 ABC music file with the extracted tune(s)
Tune-89046-CotteyHouse_PLFD1702_481.ps 34744 PostScript
Tune-89046-CotteyHouse_PLFD1702_481.txt 405 Plain-text file with the extracted tune(s)
Tune-89046-RJ_2019_Set2.abc 1243 ABC music file with the extracted tune(s)
Tune-89046-RJ_2019_Set2.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-89046-RJ_2019_Set2.ps 47761 PostScript
Tune-89046-RJ_2019_Set2.txt 1243 Plain-text file with the extracted tune(s)
Tune-89046-get.log 11093 Log file, useful mostly for debugging
These files should be available for 24 hours.