Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/TremontQuadrilles/Straight_Skillern.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4010-Straight_Skillern.ps) >>/Users/jc/w/tmp/Tune-4010-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/TremontQuadrilles/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-4010-Straight_Skillern.abc 167 ABC music file with the extracted tune(s)
Tune-4010-Straight_Skillern.ps 6 PostScript
Tune-4010-Straight_Skillern.txt 167 Plain-text file with the extracted tune(s)
Tune-4010-get.log 10034 Log file, useful mostly for debugging
Tune-40104-12CountryDances_1796_Cahusac.abc 165 ABC music file with the extracted tune(s)
Tune-40104-12CountryDances_1796_Cahusac.pdf 2217 Portable Data Format
Tune-40104-12CountryDances_1796_Cahusac.ps 6 PostScript
Tune-40104-12CountryDances_1796_Cahusac.txt 165 Plain-text file with the extracted tune(s)
Tune-40104-get.log 9684 Log file, useful mostly for debugging
Tune-40106-get.log 5483 Log file, useful mostly for debugging
Tune-40107-get.log 4496 Log file, useful mostly for debugging
Tune-40108-get.log 7093 Log file, useful mostly for debugging
These files should be available for 24 hours.