Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/3D2006/24CountryDances_1748_TDavis.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1873-24CountryDances_1748_TDavis.ps) >>/Users/jc/w/tmp/Tune-1873-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/3D2006/24CountryDances_1748_TDavis.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_18732.log 289950 Log file, useful mostly for debugging
Coll_18739.log 284330 Log file, useful mostly for debugging
Tune-1873-24CountryDances_1748_TDavis.abc 166 ABC music file with the extracted tune(s)
Tune-1873-24CountryDances_1748_TDavis.ps 6 PostScript
Tune-1873-24CountryDances_1748_TDavis.txt 166 Plain-text file with the extracted tune(s)
Tune-1873-get.log 10075 Log file, useful mostly for debugging
Tune-18733-get.log 4053 Log file, useful mostly for debugging
Tune-18735-1243_Little_Tom_Tinker.abc 707 ABC music file with the extracted tune(s)
Tune-18735-1243_Little_Tom_Tinker.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-18735-1243_Little_Tom_Tinker.ps 33518 PostScript
Tune-18735-1243_Little_Tom_Tinker.txt 707 Plain-text file with the extracted tune(s)
Tune-18735-get.log 5665 Log file, useful mostly for debugging
Tune-18739-24CountryDances_1810_Button_Whitaker_Elegant.abc 181 ABC music file with the extracted tune(s)
Tune-18739-24CountryDances_1810_Button_Whitaker_Elegant.txt 181 Plain-text file with the extracted tune(s)
Tune-18739-get.log 7050 Log file, useful mostly for debugging
These files should be available for 24 hours.