Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/PS/MrKynastonsFamousDance.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4176-MrKynastonsFamousDance.ps) >>/Users/jc/w/tmp/Tune-4176-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/PS/MrKynastonsFamousDance.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_4176.log 448465 Log file, useful mostly for debugging
Coll_41762.log 289950 Log file, useful mostly for debugging
Coll_41763.log 287140 Log file, useful mostly for debugging
Tune-4176-MrKynastonsFamousDance.abc 157 ABC music file with the extracted tune(s)
Tune-4176-MrKynastonsFamousDance.ps 6 PostScript
Tune-4176-MrKynastonsFamousDance.txt 157 Plain-text file with the extracted tune(s)
Tune-4176-get.log 4304 Log file, useful mostly for debugging
Tune-41762-get.log 5082 Log file, useful mostly for debugging
Tune-41765-get.log 5734 Log file, useful mostly for debugging
Tune-41768-SkillernChalloner_PCD1.abc 161 ABC music file with the extracted tune(s)
Tune-41768-SkillernChalloner_PCD1.pdf 2217 Portable Data Format
Tune-41768-SkillernChalloner_PCD1.ps 6 PostScript
Tune-41768-SkillernChalloner_PCD1.txt 161 Plain-text file with the extracted tune(s)
Tune-41768-get.log 5246 Log file, useful mostly for debugging
Tune-41769-get.log 4491 Log file, useful mostly for debugging
These files should be available for 24 hours.