Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1774/MSRPB.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3956-MSRPB.ps) >>/Users/jc/w/tmp/Tune-3956-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1774/MSRPB.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Find_39561.log 1905 Log file, useful mostly for debugging
Sess-39560.log 116 Log file, useful mostly for debugging
Tune-3956-131-the_Braes_of_Boyndlie.abc 1414 ABC music file with the extracted tune(s)
Tune-3956-131-the_Braes_of_Boyndlie.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-3956-131-the_Braes_of_Boyndlie.ps 43003 PostScript
Tune-3956-131-the_Braes_of_Boyndlie.txt 1414 Plain-text file with the extracted tune(s)
Tune-3956-MSRPB.abc 142 ABC music file with the extracted tune(s)
Tune-3956-MSRPB.ps 6 PostScript
Tune-3956-MSRPB.txt 142 Plain-text file with the extracted tune(s)
Tune-3956-get.log 9768 Log file, useful mostly for debugging
Tune-39560-10663_Soldiers_Joy.abc 676 ABC music file with the extracted tune(s)
Tune-39560-10663_Soldiers_Joy.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-39560-10663_Soldiers_Joy.ps 34626 PostScript
Tune-39560-10663_Soldiers_Joy.txt 676 Plain-text file with the extracted tune(s)
Tune-39560-get.log 8762 Log file, useful mostly for debugging
Tune-39561-get.log 56454 Log file, useful mostly for debugging
Tune-39562-Gow-CSR2-abc2.abc 156 ABC music file with the extracted tune(s)
Tune-39562-Gow-CSR2-abc2.ps 6 PostScript
Tune-39562-Gow-CSR2-abc2.txt 156 Plain-text file with the extracted tune(s)
Tune-39562-get.log 4215 Log file, useful mostly for debugging
Tune-39567-get.log 4243 Log file, useful mostly for debugging
Tune-39568-get.log 27042 Log file, useful mostly for debugging
These files should be available for 24 hours.