pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-26760-20763_Boston_Assembly.ps) >>/Users/jc/w/tmp/Tune-26760-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/EliasHowe/MusiciansCompanionP2/20763_Boston_Assembly.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Tune-26760-20763_Boston_Assembly.abc 647 ABC music file with the extracted tune(s)
Tune-26760-20763_Boston_Assembly.ps 34454 PostScript
Tune-26760-20763_Boston_Assembly.txt 647 Plain-text file with the extracted tune(s)
Tune-26760-get.log 4862 Log file, useful mostly for debugging
These files should be available for 24 hours.