pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-19141-AuldGreyCat.ps) >>/Users/jc/w/tmp/Tune-19141-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/AuldGreyCat.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-19141-AuldGreyCat.abc 1920 ABC music file with the extracted tune(s)
Tune-19141-AuldGreyCat.ps 44111 PostScript
Tune-19141-AuldGreyCat.txt 1920 Plain-text file with the extracted tune(s)
Tune-19141-Pols_Gammelvanster_Oviken.abc 1594 ABC music file with the extracted tune(s)
Tune-19141-Pols_Gammelvanster_Oviken.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-19141-Pols_Gammelvanster_Oviken.ps 47948 PostScript
Tune-19141-Pols_Gammelvanster_Oviken.txt 1594 Plain-text file with the extracted tune(s)
Tune-19141-get.log 10882 Log file, useful mostly for debugging
These files should be available for 24 hours.