Got HTTP status 404 Not Found for "http://roaringjelly.org/~jc/music/book/1745/MMM2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5222-MMM2.ps) >>/Users/jc/w/tmp/Tune-5222-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/1745/MMM2.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_5222.log 274495 Log file, useful mostly for debugging
Coll_52223.log 518968 Log file, useful mostly for debugging
Find_52224.log 1423 Log file, useful mostly for debugging
Tune-5222-MMM2.abc 141 ABC music file with the extracted tune(s)
Tune-5222-MMM2.ps 6 PostScript
Tune-5222-MMM2.txt 141 Plain-text file with the extracted tune(s)
Tune-5222-get.log 3938 Log file, useful mostly for debugging
Tune-52220-get.log 1482 Log file, useful mostly for debugging
Tune-52225-JamesJohnson_ScotsMusicalMuseumV4-V1.abc 192 ABC music file with the extracted tune(s)
Tune-52225-JamesJohnson_ScotsMusicalMuseumV4-V1.pdf 2217 Portable Data Format
Tune-52225-JamesJohnson_ScotsMusicalMuseumV4-V1.ps 6 PostScript
Tune-52225-JamesJohnson_ScotsMusicalMuseumV4-V1.txt 192 Plain-text file with the extracted tune(s)
Tune-52225-get.log 5752 Log file, useful mostly for debugging
Tune-52229-get.log 1460 Log file, useful mostly for debugging
These files should be available for 24 hours.