Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/cache/slurs.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7855-slurs.ps) >>/Users/jc/w/tmp/Tune-7855-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/cache/slurs.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
List78551.log 162 Log file, useful mostly for debugging
Tune-7855-IgnatiusSancho_MCCD_v1.abc 159 ABC music file with the extracted tune(s)
Tune-7855-IgnatiusSancho_MCCD_v1.ps 6 PostScript
Tune-7855-IgnatiusSancho_MCCD_v1.txt 159 Plain-text file with the extracted tune(s)
Tune-7855-get.log 8193 Log file, useful mostly for debugging
Tune-7855-slurs.abc 143 ABC music file with the extracted tune(s)
Tune-7855-slurs.ps 6 PostScript
Tune-7855-slurs.txt 143 Plain-text file with the extracted tune(s)
Tune-78550-get.log 3368 Log file, useful mostly for debugging
Tune-78552-KR27_C.abc 1359 ABC music file with the extracted tune(s)
Tune-78552-KR27_C.pdf 37073 Portable Data Format
Tune-78552-KR27_C.ps 45066 PostScript
Tune-78552-KR27_C.txt 1359 Plain-text file with the extracted tune(s)
Tune-78552-get.log 8912 Log file, useful mostly for debugging
Tune-78555-get.log 6937 Log file, useful mostly for debugging
Tune-78558-KR08_B-001.svg 70066 Scalable Vector Graphics format
Tune-78558-KR08_B.abc 2151 ABC music file with the extracted tune(s)
Tune-78558-KR08_B.txt 2151 Plain-text file with the extracted tune(s)
Tune-78558-get.log 14037 Log file, useful mostly for debugging
Tune-78559-get.log 5694 Log file, useful mostly for debugging
These files should be available for 24 hours.