pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-541-b.ps) >>/Users/jc/w/tmp/Tune-541-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/terra.es/personal8/niltoni/b.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_54110.log 150748 Log file, useful mostly for debugging
Coll_54153.log 136833 Log file, useful mostly for debugging
Coll_54193.log 284022 Log file, useful mostly for debugging
Form_5411.log 887 Log file, useful mostly for debugging
Form_54120.log 926 Log file, useful mostly for debugging
Form_54141.log 903 Log file, useful mostly for debugging
Form_5417.log 915 Log file, useful mostly for debugging
Form_54179.log 910 Log file, useful mostly for debugging
Form_54186.log 1876 Log file, useful mostly for debugging
Form_54192.log 924 Log file, useful mostly for debugging
Tune-541-b.abc 537 ABC music file with the extracted tune(s)
Tune-541-b.ps 37461 PostScript
Tune-541-b.txt 537 Plain-text file with the extracted tune(s)
Tune-541-get.log 310264 Log file, useful mostly for debugging
Tune-54102-JeffersonLiberty_BlackWatch_Medley.abc 0 ABC music file with the extracted tune(s)
Tune-54102-JeffersonLiberty_BlackWatch_Medley.ps 6 PostScript
Tune-54102-JeffersonLiberty_BlackWatch_Medley.txt 0 Plain-text file with the extracted tune(s)
Tune-54102-get.log 4931 Log file, useful mostly for debugging
Tune-54109-get.log 6246 Log file, useful mostly for debugging
Tune-5411-get.log 391859 Log file, useful mostly for debugging
Tune-54130-CallamBrougach.abc 886 ABC music file with the extracted tune(s)
Tune-54130-CallamBrougach.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-54130-CallamBrougach.ps 45551 PostScript
Tune-54130-CallamBrougach.txt 886 Plain-text file with the extracted tune(s)
Tune-54130-get.log 5825 Log file, useful mostly for debugging
Tune-54133-get.log 2858 Log file, useful mostly for debugging
Tune-54147-203-gallagher-set.abc 0 ABC music file with the extracted tune(s)
Tune-54147-203-gallagher-set.ps 6 PostScript
Tune-54147-203-gallagher-set.txt 0 Plain-text file with the extracted tune(s)
Tune-54147-get.log 289030 Log file, useful mostly for debugging
Tune-54168-get.log 3067 Log file, useful mostly for debugging
Tune-54168-nige.abc 0 ABC music file with the extracted tune(s)
Tune-54168-nige.txt 0 Plain-text file with the extracted tune(s)
Tune-54170-get.log 5926 Log file, useful mostly for debugging
Tune-54185-get.log 4472 Log file, useful mostly for debugging
Tune-5419-get.log 6111 Log file, useful mostly for debugging
These files should be available for 24 hours.