Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1800/24CountryDances_1781_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7121-24CountryDances_1781_Skillern.ps) >>/Users/jc/w/tmp/Tune-7121-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1800/24CountryDances_1781_Skillern.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_71218.log 450124 Log file, useful mostly for debugging
Tune-7121-24CountryDances_1781_Skillern.abc 166 ABC music file with the extracted tune(s)
Tune-7121-24CountryDances_1781_Skillern.ps 6 PostScript
Tune-7121-24CountryDances_1781_Skillern.txt 166 Plain-text file with the extracted tune(s)
Tune-7121-get.log 4467 Log file, useful mostly for debugging
Tune-71214-get.log 5359 Log file, useful mostly for debugging
Tune-71215-get.log 2884 Log file, useful mostly for debugging
Tune-71216-get.log 8294 Log file, useful mostly for debugging
Tune-71217-get.log 4520 Log file, useful mostly for debugging
Tune-71218-JohnJohnson_ChoiceCollectionVol8-V2.abc 172 ABC music file with the extracted tune(s)
Tune-71218-JohnJohnson_ChoiceCollectionVol8-V2.txt 172 Plain-text file with the extracted tune(s)
Tune-71218-get.log 3636 Log file, useful mostly for debugging
Tune-71219-get.log 4037 Log file, useful mostly for debugging
These files should be available for 24 hours.