pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8012-Sow_in_the_Sack.ps) >>/Users/jc/w/tmp/Tune-8012-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/GM/Sow_in_the_Sack.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_80126.log 532134 Log file, useful mostly for debugging
Form_80120.log 968 Log file, useful mostly for debugging
Form_80123.log 1650 Log file, useful mostly for debugging
Form_80129.log 956 Log file, useful mostly for debugging
Tune-8012-Sow_in_the_Sack.abc 840 ABC music file with the extracted tune(s)
Tune-8012-Sow_in_the_Sack.ps 35449 PostScript
Tune-8012-Sow_in_the_Sack.txt 840 Plain-text file with the extracted tune(s)
Tune-8012-get.log 4503 Log file, useful mostly for debugging
Tune-80121-get.log 15643 Log file, useful mostly for debugging
Tune-80121-hornpipe.abc 175 ABC music file with the extracted tune(s)
Tune-80121-hornpipe.ps 6 PostScript
Tune-80121-hornpipe.txt 175 Plain-text file with the extracted tune(s)
Tune-80124-get.log 4405 Log file, useful mostly for debugging
Tune-80125-get.log 9828 Log file, useful mostly for debugging
Tune-80126-get.log 27627 Log file, useful mostly for debugging
Tune-80127-get.log 5882 Log file, useful mostly for debugging
Tune-80129-get.log 1344 Log file, useful mostly for debugging
These files should be available for 24 hours.