pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-62690-Kerenski_Am.ps) >>/Users/jc/w/tmp/Tune-62690-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/session/Oivan_Ilo/Kerenski/Kerenski_Am.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Tune-62690-Kerenski_Am.abc 413 ABC music file with the extracted tune(s)
Tune-62690-Kerenski_Am.ps 33713 PostScript
Tune-62690-Kerenski_Am.txt 413 Plain-text file with the extracted tune(s)
Tune-62690-get.log 10033 Log file, useful mostly for debugging
These files should be available for 24 hours.