pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-510-hnj1.ps) >>/Users/jc/w/tmp/Tune-510-get.log 2>&1" returned status 256
http://www.norbeck.nu/abc/i/hnj1.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
Coll_51001.log 139177 Log file, useful mostly for debugging
Coll_51018.log 261969 Log file, useful mostly for debugging
Coll_51021.log 143412 Log file, useful mostly for debugging
Coll_51027.log 261969 Log file, useful mostly for debugging
Coll_5103.log 46 Log file, useful mostly for debugging
Coll_51040.log 259149 Log file, useful mostly for debugging
Coll_51046.log 135547 Log file, useful mostly for debugging
Coll_51053.log 138572 Log file, useful mostly for debugging
Coll_51064.log 261969 Log file, useful mostly for debugging
Coll_51065.log 256329 Log file, useful mostly for debugging
Coll_51078.log 138572 Log file, useful mostly for debugging
Coll_51080.log 263379 Log file, useful mostly for debugging
Coll_51091.log 261969 Log file, useful mostly for debugging
Find_51012.log 1421 Log file, useful mostly for debugging
Form_51021.log 899 Log file, useful mostly for debugging
Sess-51047.log 2133645 Log file, useful mostly for debugging
Tune-510-get.log 4018 Log file, useful mostly for debugging
Tune-510-hnj1.abc 501 ABC music file with the extracted tune(s)
Tune-510-hnj1.ps 39316 PostScript
Tune-510-hnj1.txt 501 Plain-text file with the extracted tune(s)
Tune-5102-get.log 3009 Log file, useful mostly for debugging
Tune-5105-get.log 4601 Log file, useful mostly for debugging
Tune-51089-get.log 5072 Log file, useful mostly for debugging
Tune-5109-get.log 5305 Log file, useful mostly for debugging
These files should be available for 24 hours.