pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7989-Jessie_Polka.ps) >>/Users/jc/w/tmp/Tune-7989-get.log 2>&1" returned status 256
http://www.tunearch.org/wiki/Jessie_Polka

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Coll_79897.log 261969 Log file, useful mostly for debugging
Form_79891.log 847 Log file, useful mostly for debugging
Tune-7989-Jessie_Polka.abc 760 ABC music file with the extracted tune(s)
Tune-7989-Jessie_Polka.ps 39939 PostScript
Tune-7989-Jessie_Polka.txt 760 Plain-text file with the extracted tune(s)
Tune-7989-get.log 4724 Log file, useful mostly for debugging
Tune-79894-Singles.abc 395 ABC music file with the extracted tune(s)
Tune-79894-Singles.ps 34553 PostScript
Tune-79894-Singles.txt 395 Plain-text file with the extracted tune(s)
Tune-79894-get.log 4216 Log file, useful mostly for debugging
These files should be available for 24 hours.