pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7653-08_Mariners_Departure.ps) >>/Users/jc/w/tmp/Tune-7653-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/DftY/1809/Cahusac_JC/08_Mariners_Departure.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_76530.log 826298 Log file, useful mostly for debugging
Coll_76535.log 275899 Log file, useful mostly for debugging
Coll_76539.log 278709 Log file, useful mostly for debugging
Find_76535.log 1269 Log file, useful mostly for debugging
Find_76539.log 1269 Log file, useful mostly for debugging
Tune-7653-08_Mariners_Departure.abc 827 ABC music file with the extracted tune(s)
Tune-7653-08_Mariners_Departure.ps 32734 PostScript
Tune-7653-08_Mariners_Departure.txt 827 Plain-text file with the extracted tune(s)
Tune-7653-get.log 4764 Log file, useful mostly for debugging
These files should be available for 24 hours.