pscmd="(jcabc2ps /Users/jc/w/tmp/Tune-60424-MusiciansCompanionP1-1842-V2.abc -F fmt/pdf_65.fmt +s 0.65 +maxs 2000 )>/Users/jc/w/tmp/Tune-60424-MusiciansCompanionP1-1842-V2.ps 2>>/Users/jc/w/tmp/Tune-60424-get.log" returned status 34304.
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP1/MusiciansCompanionP1-1842-V2.abc

Error exit status 34304; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 ]
filesizedescription
Tune-60424-MusiciansCompanionP1-1842-V2.abc 297574 ABC music file with the extracted tune(s)
Tune-60424-MusiciansCompanionP1-1842-V2.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-60424-MusiciansCompanionP1-1842-V2.ps 1156844 PostScript
Tune-60424-MusiciansCompanionP1-1842-V2.txt 297574 Plain-text file with the extracted tune(s)
Tune-60424-get.log 223633 Log file, useful mostly for debugging
These files should be available for 24 hours.