Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1754/Thompson_V3_1766-1772_FTM.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7311-Thompson_V3_1766-1772_FTM.ps) >>/Users/jc/w/tmp/Tune-7311-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1754/Thompson_V3_1766-1772_FTM.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-7311-Thompson_V3_1766-1772_FTM.abc 162 ABC music file with the extracted tune(s)
Tune-7311-Thompson_V3_1766-1772_FTM.ps 6 PostScript
Tune-7311-Thompson_V3_1766-1772_FTM.txt 162 Plain-text file with the extracted tune(s)
Tune-7311-get.log 20049 Log file, useful mostly for debugging
Tune-73111-get.log 4760 Log file, useful mostly for debugging
Tune-73112-get.log 3028 Log file, useful mostly for debugging
Tune-73118-CSR2-abc2.abc 153 ABC music file with the extracted tune(s)
Tune-73118-CSR2-abc2.txt 153 Plain-text file with the extracted tune(s)
Tune-73118-get.log 3206 Log file, useful mostly for debugging
Tune-73119-EliasHowe_MusiciansCompanionP3-1844-V2.abc 175 ABC music file with the extracted tune(s)
Tune-73119-EliasHowe_MusiciansCompanionP3-1844-V2.pdf 2217 Portable Data Format
Tune-73119-EliasHowe_MusiciansCompanionP3-1844-V2.ps 6 PostScript
Tune-73119-EliasHowe_MusiciansCompanionP3-1844-V2.txt 175 Plain-text file with the extracted tune(s)
Tune-73119-get.log 5694 Log file, useful mostly for debugging
These files should be available for 24 hours.