Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/cache/Tune-34497-CherpingOfTheLarke.abc/tmp"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9202-tmp.ps) >>/Users/jc/w/tmp/Tune-9202-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/cache/Tune-34497-CherpingOfTheLarke.abc/tmp

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_92022.log 261010 Log file, useful mostly for debugging
Coll_92025.log 455610 Log file, useful mostly for debugging
Form_92021.abc 317 ABC music file with the extracted tune(s)
Form_92021.log 1101 Log file, useful mostly for debugging
Form_92021_001.svg 14592 Scalable Vector Graphics format
Tune-9202-get.log 15739 Log file, useful mostly for debugging
Tune-9202-tmp.abc 171 ABC music file with the extracted tune(s)
Tune-9202-tmp.ps 6 PostScript
Tune-9202-tmp.txt 171 Plain-text file with the extracted tune(s)
Tune-92020-My_Darling_I_Am_Fond_of_You_2-D-40-2.abc 777 ABC music file with the extracted tune(s)
Tune-92020-My_Darling_I_Am_Fond_of_You_2-D-40-2.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-92020-My_Darling_I_Am_Fond_of_You_2-D-40-2.ps 32665 PostScript
Tune-92020-My_Darling_I_Am_Fond_of_You_2-D-40-2.txt 777 Plain-text file with the extracted tune(s)
Tune-92020-get.log 5873 Log file, useful mostly for debugging
Tune-92021-My_Darling_I_Am_Fond_of_You-D-40-5-001.svg 18643 Scalable Vector Graphics format
Tune-92021-My_Darling_I_Am_Fond_of_You-D-40-5.abc 707 ABC music file with the extracted tune(s)
Tune-92021-My_Darling_I_Am_Fond_of_You-D-40-5.txt 707 Plain-text file with the extracted tune(s)
Tune-92021-get.log 4643 Log file, useful mostly for debugging
Tune-92022-Ellen_OGrady_2-A-16-2.abc 416 ABC music file with the extracted tune(s)
Tune-92022-Ellen_OGrady_2-A-16-2.ps 33952 PostScript
Tune-92022-Ellen_OGrady_2-A-16-2.txt 416 Plain-text file with the extracted tune(s)
Tune-92022-get.log 5080 Log file, useful mostly for debugging
Tune-92023-get.log 4033 Log file, useful mostly for debugging
Tune-92024-get.log 5142 Log file, useful mostly for debugging
Tune-92027-My_Dear_Darling-D-16-3.abc 585 ABC music file with the extracted tune(s)
Tune-92027-My_Dear_Darling-D-16-3.ps 37442 PostScript
Tune-92027-My_Dear_Darling-D-16-3.txt 585 Plain-text file with the extracted tune(s)
Tune-92027-get.log 5309 Log file, useful mostly for debugging
Tune-92028-My_Darling_I_Am_Fond_of_You_2-D-40-2.abc 777 ABC music file with the extracted tune(s)
Tune-92028-My_Darling_I_Am_Fond_of_You_2-D-40-2.ps 32665 PostScript
Tune-92028-My_Darling_I_Am_Fond_of_You_2-D-40-2.txt 777 Plain-text file with the extracted tune(s)
Tune-92028-get.log 5073 Log file, useful mostly for debugging
Tune-92029-My_Darling_I_Am_Fond_of_You_2-D-40-2.abc 777 ABC music file with the extracted tune(s)
Tune-92029-My_Darling_I_Am_Fond_of_You_2-D-40-2.pdf 14209 Portable Data Format
Tune-92029-My_Darling_I_Am_Fond_of_You_2-D-40-2.ps 32665 PostScript
Tune-92029-My_Darling_I_Am_Fond_of_You_2-D-40-2.txt 777 Plain-text file with the extracted tune(s)
Tune-92029-get.log 6053 Log file, useful mostly for debugging
These files should be available for 24 hours.