Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Book26/AbrahamMackintosh.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6349-AbrahamMackintosh.ps) >>/Users/jc/w/tmp/Tune-6349-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Book26/AbrahamMackintosh.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_63494.log 1487 Log file, useful mostly for debugging
Tune-6349-AbrahamMackintosh.abc 156 ABC music file with the extracted tune(s)
Tune-6349-AbrahamMackintosh.ps 6 PostScript
Tune-6349-AbrahamMackintosh.txt 156 Plain-text file with the extracted tune(s)
Tune-6349-get.log 4225 Log file, useful mostly for debugging
Tune-63492-get.log 7074 Log file, useful mostly for debugging
Tune-63494-get.log 29723 Log file, useful mostly for debugging
Tune-63498-24CountryDances_1799_Skillern.abc 168 ABC music file with the extracted tune(s)
Tune-63498-24CountryDances_1799_Skillern.txt 168 Plain-text file with the extracted tune(s)
Tune-63498-get.log 3538 Log file, useful mostly for debugging
Tune-63499-get.log 4462 Log file, useful mostly for debugging
These files should be available for 24 hours.