pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-24556-MissGibsonsStr2.ps) >>/Users/jc/w/tmp/Tune-24556-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/Scotland/MissGibsonsStr2.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-24556-BingsjoPolska.abc 13496 ABC music file with the extracted tune(s)
Tune-24556-BingsjoPolska.pdf 299776 Portable Data Format
Tune-24556-BingsjoPolska.ps 206847 PostScript
Tune-24556-BingsjoPolska.txt 13496 Plain-text file with the extracted tune(s)
Tune-24556-MissGibsonsStr2.abc 2088 ABC music file with the extracted tune(s)
Tune-24556-MissGibsonsStr2.ps 45804 PostScript
Tune-24556-MissGibsonsStr2.txt 2088 Plain-text file with the extracted tune(s)
Tune-24556-get.log 24888 Log file, useful mostly for debugging
These files should be available for 24 hours.