Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/Brodie/Straight_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-3342-Straight_Skillern.ps) >>/Users/jc/w/tmp/Tune-3342-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Brodie/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
Form_33427.log 1133 Log file, useful mostly for debugging
Tune-3342-Straight_Skillern.abc 156 ABC music file with the extracted tune(s)
Tune-3342-Straight_Skillern.ps 6 PostScript
Tune-3342-Straight_Skillern.txt 156 Plain-text file with the extracted tune(s)
Tune-3342-get.log 35528 Log file, useful mostly for debugging
Tune-33425-get.log 3953 Log file, useful mostly for debugging
Tune-33427-RobertBremner_CSRCD1.abc 159 ABC music file with the extracted tune(s)
Tune-33427-RobertBremner_CSRCD1.pdf 2217 Portable Data Format
Tune-33427-RobertBremner_CSRCD1.ps 6 PostScript
Tune-33427-RobertBremner_CSRCD1.txt 159 Plain-text file with the extracted tune(s)
Tune-33427-get.log 6610 Log file, useful mostly for debugging
These files should be available for 24 hours.