Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/book/Fredin/dim.abc"
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6249-dim.ps) >>/Users/jc/w/tmp/Tune-6249-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Fredin/dim.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_62490.log 275900 Log file, useful mostly for debugging
Coll_62499.log 287141 Log file, useful mostly for debugging
Find_62492.log 1510 Log file, useful mostly for debugging
Tune-6249-dim.abc 142 ABC music file with the extracted tune(s)
Tune-6249-dim.ps 6 PostScript
Tune-6249-dim.txt 142 Plain-text file with the extracted tune(s)
Tune-6249-get.log 3929 Log file, useful mostly for debugging
Tune-62492-get.log 3278 Log file, useful mostly for debugging
Tune-62496-Kerr_MM3-V2.abc 155 ABC music file with the extracted tune(s)
Tune-62496-Kerr_MM3-V2.ps 6 PostScript
Tune-62496-Kerr_MM3-V2.txt 155 Plain-text file with the extracted tune(s)
Tune-62496-get.log 4050 Log file, useful mostly for debugging
Tune-62497-get.log 1462 Log file, useful mostly for debugging
Tune-62498-get.log 5390 Log file, useful mostly for debugging
Tune-62499-get.log 3507 Log file, useful mostly for debugging
These files should be available for 24 hours.