pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8182-ShiftinBobbins2.ps) >>/Users/jc/w/tmp/Tune-8182-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/Scotland/ShiftinBobbins2.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_81820.log 292760 Log file, useful mostly for debugging
Coll_81821.log 271685 Log file, useful mostly for debugging
Coll_81826.log 574280 Log file, useful mostly for debugging
Tune-8182-ShiftinBobbins2.abc 1538 ABC music file with the extracted tune(s)
Tune-8182-ShiftinBobbins2.ps 43500 PostScript
Tune-8182-ShiftinBobbins2.txt 1538 Plain-text file with the extracted tune(s)
Tune-8182-get.log 4925 Log file, useful mostly for debugging
These files should be available for 24 hours.