Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/1772/Kerr_MM2-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-280-Kerr_MM2-V2.ps) >>/Users/jc/w/tmp/Tune-280-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/1772/Kerr_MM2-V2.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_2803.log 295574 Log file, useful mostly for debugging
Tune-280-Kerr_MM2-V2.abc 148 ABC music file with the extracted tune(s)
Tune-280-Kerr_MM2-V2.ps 6 PostScript
Tune-280-Kerr_MM2-V2.txt 148 Plain-text file with the extracted tune(s)
Tune-280-get.log 4068 Log file, useful mostly for debugging
Tune-28002-10922_Fife_Hunt.abc 490 ABC music file with the extracted tune(s)
Tune-28002-10922_Fife_Hunt.txt 490 Plain-text file with the extracted tune(s)
Tune-28002-get.log 3194 Log file, useful mostly for debugging
Tune-28006-Aird_vol3_abc1.abc 75597 ABC music file with the extracted tune(s)
Tune-28006-Aird_vol3_abc1.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-28006-Aird_vol3_abc1.ps 1029919 PostScript
Tune-28006-Aird_vol3_abc1.txt 75597 Plain-text file with the extracted tune(s)
Tune-28006-get.log 122122 Log file, useful mostly for debugging
Tune-28013-get.log 3984 Log file, useful mostly for debugging
Tune-2802-get.log 2967 Log file, useful mostly for debugging
Tune-2802-march.abc 191 ABC music file with the extracted tune(s)
Tune-2802-march.txt 191 Plain-text file with the extracted tune(s)
Tune-2803-Hearts_Ease-001.svg 14261 Scalable Vector Graphics format
Tune-2803-Hearts_Ease.abc 1248 ABC music file with the extracted tune(s)
Tune-2803-Hearts_Ease.txt 1248 Plain-text file with the extracted tune(s)
Tune-2803-get.log 4037 Log file, useful mostly for debugging
Tune-28040-Bob_Ritchie.abc 1042 ABC music file with the extracted tune(s)
Tune-28040-Bob_Ritchie.pdf 19445 Portable Data Format
Tune-28040-Bob_Ritchie.ps 36625 PostScript
Tune-28040-Bob_Ritchie.txt 1042 Plain-text file with the extracted tune(s)
Tune-28040-get.log 5309 Log file, useful mostly for debugging
Tune-28044-1792_Thompson_24.abc 11842 ABC music file with the extracted tune(s)
Tune-28044-1792_Thompson_24.pdf 220979 Portable Data Format
Tune-28044-1792_Thompson_24.ps 142339 PostScript
Tune-28044-1792_Thompson_24.txt 11842 Plain-text file with the extracted tune(s)
Tune-28044-get.log 22276 Log file, useful mostly for debugging
Tune-28045-SarabandThe_PLFD1651_087-001.svg 14890 Scalable Vector Graphics format
Tune-28045-SarabandThe_PLFD1651_087.abc 365 ABC music file with the extracted tune(s)
Tune-28045-SarabandThe_PLFD1651_087.txt 365 Plain-text file with the extracted tune(s)
Tune-28045-get.log 4447 Log file, useful mostly for debugging
Tune-2805-Gun.abc 265 ABC music file with the extracted tune(s)
Tune-2805-Gun.pdf 12125 Portable Data Format
Tune-2805-Gun.ps 33278 PostScript
Tune-2805-Gun.txt 265 Plain-text file with the extracted tune(s)
Tune-2805-get.log 4965 Log file, useful mostly for debugging
Tune-28050-20222_Auld_Rob_Morris.abc 627 ABC music file with the extracted tune(s)
Tune-28050-20222_Auld_Rob_Morris.ps 34642 PostScript
Tune-28050-20222_Auld_Rob_Morris.txt 627 Plain-text file with the extracted tune(s)
Tune-28050-get.log 4654 Log file, useful mostly for debugging
Tune-28056-get.log 4121 Log file, useful mostly for debugging
Tune-28058-High_Caul_Cap.abc 937 ABC music file with the extracted tune(s)
Tune-28058-High_Caul_Cap.ps 41039 PostScript
Tune-28058-High_Caul_Cap.txt 937 Plain-text file with the extracted tune(s)
Tune-28058-get.log 4714 Log file, useful mostly for debugging
Tune-28059-CPCvol2-abc2.abc 222645 ABC music file with the extracted tune(s)
Tune-28059-CPCvol2-abc2.ps 3107120 PostScript
Tune-28059-CPCvol2-abc2.txt 222645 Plain-text file with the extracted tune(s)
Tune-28059-get.log 202860 Log file, useful mostly for debugging
Tune-28062-get.log 4157 Log file, useful mostly for debugging
Tune-28063-DevonshireHouse_Bb-001.svg 16387 Scalable Vector Graphics format
Tune-28063-DevonshireHouse_Bb.abc 1220 ABC music file with the extracted tune(s)
Tune-28063-DevonshireHouse_Bb.txt 1220 Plain-text file with the extracted tune(s)
Tune-28063-get.log 4242 Log file, useful mostly for debugging
Tune-28068-get.log 5001 Log file, useful mostly for debugging
Tune-28085-Tom_Billys_Jig.abc 401 ABC music file with the extracted tune(s)
Tune-28085-Tom_Billys_Jig.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-28085-Tom_Billys_Jig.ps 34726 PostScript
Tune-28085-Tom_Billys_Jig.txt 401 Plain-text file with the extracted tune(s)
Tune-28085-get.log 10504 Log file, useful mostly for debugging
Tune-2809-get.log 4340 Log file, useful mostly for debugging
Tune-28093-get.log 5361 Log file, useful mostly for debugging
These files should be available for 24 hours.