pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-73790-CaledonianMusicalRepository_1806.abc -F fmt/pdf_55.fmt +s 0.55 +maxs 2000 )>/Users/jc/w/tmp/Tune-73790-CaledonianMusicalRepository_1806.ps 2>>/Users/jc/w/tmp/Tune-73790-get.log" returned status 256.
http://john-chambers.us/~jc/music/book/CaledonianMusicalRepository_1806.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.55 512x512 ]
filesizedescription
Tune-73790-CaledonianMusicalRepository_1806.abc 235251 ABC music file with the extracted tune(s)
Tune-73790-CaledonianMusicalRepository_1806.ps 0 PostScript
Tune-73790-CaledonianMusicalRepository_1806.txt 235251 Plain-text file with the extracted tune(s)
Tune-73790-get.log 93638 Log file, useful mostly for debugging
These files should be available for 24 hours.