Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/hambo/JohnTreat_GftF2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3987-JohnTreat_GftF2.ps) >>/Users/jc/w/tmp/Tune-3987-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/hambo/JohnTreat_GftF2.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_39871.log 288545 Log file, useful mostly for debugging
Coll_39874.log 275900 Log file, useful mostly for debugging
Coll_39877.log 1135915 Log file, useful mostly for debugging
Tune-3987-JohnTreat_GftF2.abc 153 ABC music file with the extracted tune(s)
Tune-3987-JohnTreat_GftF2.ps 6 PostScript
Tune-3987-JohnTreat_GftF2.txt 153 Plain-text file with the extracted tune(s)
Tune-3987-get.log 4177 Log file, useful mostly for debugging
Tune-39871-get.log 4777 Log file, useful mostly for debugging
Tune-39878-Hamilton_Kerr_MM2-V1.abc 157 ABC music file with the extracted tune(s)
Tune-39878-Hamilton_Kerr_MM2-V1.ps 6 PostScript
Tune-39878-Hamilton_Kerr_MM2-V1.txt 157 Plain-text file with the extracted tune(s)
Tune-39878-get.log 4326 Log file, useful mostly for debugging
Tune-39879-get.log 3861 Log file, useful mostly for debugging
These files should be available for 24 hours.