pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-222-Aird_vol4_abc1.ps) >>/Users/jc/w/tmp/Tune-222-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Aird/Aird_vol4_abc1.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Form_22232.log 1277 Log file, useful mostly for debugging
Tune-222-Aird_vol4_abc1.abc 74080 ABC music file with the extracted tune(s)
Tune-222-Aird_vol4_abc1.ps 1037636 PostScript
Tune-222-Aird_vol4_abc1.txt 74080 Plain-text file with the extracted tune(s)
Tune-222-get.log 114626 Log file, useful mostly for debugging
Tune-22208-get.log 4735 Log file, useful mostly for debugging
Tune-22257-get.log 22603 Log file, useful mostly for debugging
Tune-22286-get.log 5645 Log file, useful mostly for debugging
These files should be available for 24 hours.