Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1812/CDSS_Gems.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1802-CDSS_Gems.ps) >>/Users/jc/w/tmp/Tune-1802-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1812/CDSS_Gems.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-10928-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-10928-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-10928-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-10928-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-15577-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-15577-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-15577-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-1802-CDSS_Gems.abc 146 ABC music file with the extracted tune(s)
Tune-1802-CDSS_Gems.ps 6 PostScript
Tune-1802-CDSS_Gems.txt 146 Plain-text file with the extracted tune(s)
Tune-1802-get.log 4045 Log file, useful mostly for debugging
Tune-18025-get.log 7321 Log file, useful mostly for debugging
Tune-22943-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-22943-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-22943-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-22943-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-37779-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-37779-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-37779-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-37779-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-37994-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-37994-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-37994-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-39872-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-39872-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-39872-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-46008-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-46008-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-46008-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-46008-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-51805-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-51805-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-68471-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-68471-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-68471-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-68906-24CountryDances_1802_Thompson.abc 169 ABC music file with the extracted tune(s)
Tune-68906-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-68906-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-68906-24CountryDances_1802_Thompson.txt 169 Plain-text file with the extracted tune(s)
Tune-69717-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-69717-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-72033-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-72033-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-72033-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-73533-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-73533-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-73533-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-75797-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-75797-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-75797-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-75797-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-77826-24CountryDances_1802_Thompson.abc 165 ABC music file with the extracted tune(s)
Tune-77826-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-77826-24CountryDances_1802_Thompson.txt 165 Plain-text file with the extracted tune(s)
Tune-78697-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-78697-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-78697-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-79369-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-79369-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-79369-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-85404-24CountryDances_1802_Thompson.abc 169 ABC music file with the extracted tune(s)
Tune-85404-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-85404-24CountryDances_1802_Thompson.txt 169 Plain-text file with the extracted tune(s)
Tune-86676-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-86676-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-86676-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-86676-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-86778-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-86778-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-86778-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-86778-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-89477-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-89477-24CountryDances_1802_Thompson.pdf 2217 Portable Data Format
Tune-89477-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-89477-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-95673-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-95673-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-95673-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-96069-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-96069-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
Tune-98257-24CountryDances_1802_Thompson.abc 166 ABC music file with the extracted tune(s)
Tune-98257-24CountryDances_1802_Thompson.ps 6 PostScript
Tune-98257-24CountryDances_1802_Thompson.txt 166 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.