pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8337-MarketGirl.ps) >>/Users/jc/w/tmp/Tune-8337-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/img/MarketGirl.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-8337-MarketGirl.abc 656 ABC music file with the extracted tune(s)
Tune-8337-MarketGirl.ps 34867 PostScript
Tune-8337-MarketGirl.txt 656 Plain-text file with the extracted tune(s)
Tune-8337-get.log 4608 Log file, useful mostly for debugging
Tune-83376-HibernianMuse-V2.abc 153 ABC music file with the extracted tune(s)
Tune-83376-HibernianMuse-V2.pdf 2217 Portable Data Format
Tune-83376-HibernianMuse-V2.ps 6 PostScript
Tune-83376-HibernianMuse-V2.txt 153 Plain-text file with the extracted tune(s)
Tune-83376-get.log 5056 Log file, useful mostly for debugging
These files should be available for 24 hours.