Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Pinewoods/24CountryDances_1778_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5506-24CountryDances_1778_Thompson.ps) >>/Users/jc/w/tmp/Tune-5506-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Pinewoods/24CountryDances_1778_Thompson.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_55061.log 571812 Log file, useful mostly for debugging
Tune-5506-24CountryDances_1778_Thompson.abc 171 ABC music file with the extracted tune(s)
Tune-5506-24CountryDances_1778_Thompson.ps 6 PostScript
Tune-5506-24CountryDances_1778_Thompson.txt 171 Plain-text file with the extracted tune(s)
Tune-5506-get.log 4497 Log file, useful mostly for debugging
Tune-55061-band8.abc 1528 ABC music file with the extracted tune(s)
Tune-55061-band8.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-55061-band8.ps 32634 PostScript
Tune-55061-band8.txt 1528 Plain-text file with the extracted tune(s)
Tune-55061-get.log 7048 Log file, useful mostly for debugging
Tune-55064-get.log 4492 Log file, useful mostly for debugging
Tune-55065-IgnatiusSancho_MCCD_v2.abc 170 ABC music file with the extracted tune(s)
Tune-55065-IgnatiusSancho_MCCD_v2.ps 6 PostScript
Tune-55065-IgnatiusSancho_MCCD_v2.txt 170 Plain-text file with the extracted tune(s)
Tune-55065-get.log 18516 Log file, useful mostly for debugging
Tune-55067-get.log 4381 Log file, useful mostly for debugging
Tune-55069-get.log 11532 Log file, useful mostly for debugging
These files should be available for 24 hours.