Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book18/Thompson_V2_1758-1765_FTM.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7494-Thompson_V2_1758-1765_FTM.ps) >>/Users/jc/w/tmp/Tune-7494-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book18/Thompson_V2_1758-1765_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
Coll_74946.log 396733 Log file, useful mostly for debugging
Tune-7494-Thompson_V2_1758-1765_FTM.abc 164 ABC music file with the extracted tune(s)
Tune-7494-Thompson_V2_1758-1765_FTM.ps 6 PostScript
Tune-7494-Thompson_V2_1758-1765_FTM.txt 164 Plain-text file with the extracted tune(s)
Tune-7494-get.log 4387 Log file, useful mostly for debugging
Tune-74941-get.log 9521 Log file, useful mostly for debugging
Tune-74944-get.log 8435 Log file, useful mostly for debugging
Tune-74945-get.log 9425 Log file, useful mostly for debugging
Tune-74948-get.log 4608 Log file, useful mostly for debugging
Tune-74949-get.log 4464 Log file, useful mostly for debugging
These files should be available for 24 hours.