pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-37583-21921_MRS_TULLOCHS_JIG.ps) >>/Users/jc/w/tmp/Tune-37583-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Kohlers/21921_MRS_TULLOCHS_JIG.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Form_37583.log 832 Log file, useful mostly for debugging
Tune-37583-21921_MRS_TULLOCHS_JIG.abc 660 ABC music file with the extracted tune(s)
Tune-37583-21921_MRS_TULLOCHS_JIG.ps 37387 PostScript
Tune-37583-21921_MRS_TULLOCHS_JIG.txt 660 Plain-text file with the extracted tune(s)
Tune-37583-get.log 4736 Log file, useful mostly for debugging
These files should be available for 24 hours.