Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/AdvancedSD/SCD_RoyGoldring_15SocialDances.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6412-SCD_RoyGoldring_15SocialDances.ps) >>/Users/jc/w/tmp/Tune-6412-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/AdvancedSD/SCD_RoyGoldring_15SocialDances.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-6412-SCD_RoyGoldring_15SocialDances.abc 173 ABC music file with the extracted tune(s)
Tune-6412-SCD_RoyGoldring_15SocialDances.ps 6 PostScript
Tune-6412-SCD_RoyGoldring_15SocialDances.txt 173 Plain-text file with the extracted tune(s)
Tune-6412-get.log 11239 Log file, useful mostly for debugging
Tune-64122-050_Old_Folks_at_Home.abc 1759 ABC music file with the extracted tune(s)
Tune-64122-050_Old_Folks_at_Home.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-64122-050_Old_Folks_at_Home.ps 38639 PostScript
Tune-64122-050_Old_Folks_at_Home.txt 1759 Plain-text file with the extracted tune(s)
Tune-64122-get.log 5526 Log file, useful mostly for debugging
These files should be available for 24 hours.