Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/MM1/Straight_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-38282-Straight_Skillern.ps) >>/Users/jc/w/tmp/Tune-38282-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/MM1/Straight_Skillern.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-38282-0501_.abc 64 ABC music file with the extracted tune(s)
Tune-38282-0501_.pdf 2217 Portable Data Format
Tune-38282-0501_.ps 6 PostScript
Tune-38282-0501_.txt 64 Plain-text file with the extracted tune(s)
Tune-38282-0933_PORTSMOUTH_MARCH.abc 615 ABC music file with the extracted tune(s)
Tune-38282-0933_PORTSMOUTH_MARCH.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-38282-0933_PORTSMOUTH_MARCH.ps 34391 PostScript
Tune-38282-0933_PORTSMOUTH_MARCH.txt 615 Plain-text file with the extracted tune(s)
Tune-38282-Straight_Skillern.abc 153 ABC music file with the extracted tune(s)
Tune-38282-Straight_Skillern.ps 6 PostScript
Tune-38282-Straight_Skillern.txt 153 Plain-text file with the extracted tune(s)
Tune-38282-get.log 14460 Log file, useful mostly for debugging
These files should be available for 24 hours.