Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/CDM6/IaST-abc1.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7693-IaST-abc1.ps) >>/Users/jc/w/tmp/Tune-7693-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/CDM6/IaST-abc1.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_76931.log 810 Log file, useful mostly for debugging
Tune-7693-IaST-abc1.abc 146 ABC music file with the extracted tune(s)
Tune-7693-IaST-abc1.ps 6 PostScript
Tune-7693-IaST-abc1.txt 146 Plain-text file with the extracted tune(s)
Tune-7693-get.log 4047 Log file, useful mostly for debugging
Tune-76933-get.log 3210 Log file, useful mostly for debugging
Tune-76936-get.log 93934 Log file, useful mostly for debugging
Tune-76937-get.log 4038 Log file, useful mostly for debugging
Tune-76938-get.log 4747 Log file, useful mostly for debugging
Tune-76939-24CountryDances_1804_Preston.abc 167 ABC music file with the extracted tune(s)
Tune-76939-24CountryDances_1804_Preston.pdf 2217 Portable Data Format
Tune-76939-24CountryDances_1804_Preston.ps 6 PostScript
Tune-76939-24CountryDances_1804_Preston.txt 167 Plain-text file with the extracted tune(s)
Tune-76939-get.log 5420 Log file, useful mostly for debugging
These files should be available for 24 hours.