Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Book45/24CountryDances_1803_Gray_Thompson.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3898-24CountryDances_1803_Gray_Thompson.ps) >>/Users/jc/w/tmp/Tune-3898-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Book45/24CountryDances_1803_Gray_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_3898.log 307671 Log file, useful mostly for debugging
Coll_38987.log 277305 Log file, useful mostly for debugging
Coll_38988.log 287140 Log file, useful mostly for debugging
Tune-3898-24CountryDances_1803_Gray_Thompson.abc 173 ABC music file with the extracted tune(s)
Tune-3898-24CountryDances_1803_Gray_Thompson.ps 6 PostScript
Tune-3898-24CountryDances_1803_Gray_Thompson.txt 173 Plain-text file with the extracted tune(s)
Tune-3898-get.log 4584 Log file, useful mostly for debugging
Tune-38983-get.log 1488 Log file, useful mostly for debugging
Tune-38988-10951_Cotillion_No_13_tune_4.abc 1131 ABC music file with the extracted tune(s)
Tune-38988-10951_Cotillion_No_13_tune_4.txt 1131 Plain-text file with the extracted tune(s)
Tune-38988-get.log 3695 Log file, useful mostly for debugging
These files should be available for 24 hours.