Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/NewInstructionsForTheClarinet.abc/Stewart_SCAJMR_1784-V2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-717-Stewart_SCAJMR_1784-V2.ps) >>/Users/jc/w/tmp/Tune-717-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/NewInstructionsForTheClarinet.abc/Stewart_SCAJMR_1784-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_71703.log 136999 Log file, useful mostly for debugging
Coll_71717.log 130549 Log file, useful mostly for debugging
Coll_71729.log 143449 Log file, useful mostly for debugging
Coll_71733.log 268875 Log file, useful mostly for debugging
Coll_71743.log 126678 Log file, useful mostly for debugging
Coll_71745.log 151191 Log file, useful mostly for debugging
Coll_71766.log 526461 Log file, useful mostly for debugging
Coll_71782.log 458342 Log file, useful mostly for debugging
Coll_71788.log 134420 Log file, useful mostly for debugging
Coll_71797.log 1111460 Log file, useful mostly for debugging
Tune-717-Stewart_SCAJMR_1784-V2.abc 188 ABC music file with the extracted tune(s)
Tune-717-Stewart_SCAJMR_1784-V2.ps 6 PostScript
Tune-717-Stewart_SCAJMR_1784-V2.txt 188 Plain-text file with the extracted tune(s)
Tune-717-get.log 4471 Log file, useful mostly for debugging
Tune-7170-get.log 1456 Log file, useful mostly for debugging
Tune-71711-get.log 31507 Log file, useful mostly for debugging
Tune-7175-get.log 1488 Log file, useful mostly for debugging
Tune-71756-Bruks_Calles_Schottis_F.abc 1126 ABC music file with the extracted tune(s)
Tune-71756-Bruks_Calles_Schottis_F.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-71756-Bruks_Calles_Schottis_F.ps 39385 PostScript
Tune-71756-Bruks_Calles_Schottis_F.txt 1126 Plain-text file with the extracted tune(s)
Tune-71756-get.log 6055 Log file, useful mostly for debugging
Tune-71779-20181104FH_C.abc 151 ABC music file with the extracted tune(s)
Tune-71779-20181104FH_C.txt 151 Plain-text file with the extracted tune(s)
Tune-71779-get.log 3264 Log file, useful mostly for debugging
These files should be available for 24 hours.