pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90743-FH2016_C.ps) >>/Users/jc/w/tmp/Tune-90743-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Klezmer/program/FH2016/FH2016_C.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-90743-FH2016_C.abc 606 ABC music file with the extracted tune(s)
Tune-90743-FH2016_C.ps 34239 PostScript
Tune-90743-FH2016_C.txt 606 Plain-text file with the extracted tune(s)
Tune-90743-get.log 4382 Log file, useful mostly for debugging
These files should be available for 24 hours.