Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1752/cresc.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9902-cresc.ps) >>/Users/jc/w/tmp/Tune-9902-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1752/cresc.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-9902-cresc.abc 142 ABC music file with the extracted tune(s)
Tune-9902-cresc.ps 6 PostScript
Tune-9902-cresc.txt 142 Plain-text file with the extracted tune(s)
Tune-9902-get.log 3961 Log file, useful mostly for debugging
Tune-99020-get.log 21328 Log file, useful mostly for debugging
Tune-99022-get.log 11170 Log file, useful mostly for debugging
Tune-99025-24CountryDances_1808_Goulding_PD.abc 168 ABC music file with the extracted tune(s)
Tune-99025-24CountryDances_1808_Goulding_PD.pdf 2217 Portable Data Format
Tune-99025-24CountryDances_1808_Goulding_PD.ps 6 PostScript
Tune-99025-24CountryDances_1808_Goulding_PD.txt 168 Plain-text file with the extracted tune(s)
Tune-99025-get.log 10051 Log file, useful mostly for debugging
Tune-99029-get.log 3872 Log file, useful mostly for debugging
These files should be available for 24 hours.