Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Paris_Book/RSCDS_Graded2.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-5549-RSCDS_Graded2.ps) >>/Users/jc/w/tmp/Tune-5549-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Paris_Book/RSCDS_Graded2.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_55498.log 420612 Log file, useful mostly for debugging
Tune-5549-RSCDS_Graded2.abc 156 ABC music file with the extracted tune(s)
Tune-5549-RSCDS_Graded2.ps 6 PostScript
Tune-5549-RSCDS_Graded2.txt 156 Plain-text file with the extracted tune(s)
Tune-5549-get.log 14540 Log file, useful mostly for debugging
Tune-55490-get.log 4770 Log file, useful mostly for debugging
Tune-55491-get.log 4239 Log file, useful mostly for debugging
Tune-55494-get.log 7725 Log file, useful mostly for debugging
Tune-55495-get.log 5354 Log file, useful mostly for debugging
Tune-55497-get.log 5511 Log file, useful mostly for debugging
Tune-55499-get.log 8308 Log file, useful mostly for debugging
These files should be available for 24 hours.