pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6977-GlasgowCeilidhClub_Bm.ps) >>/Users/jc/w/tmp/Tune-6977-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Contra/jig/GlasgowCeilidhClub_Bm.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_69770.log 264789 Log file, useful mostly for debugging
Find_69772.log 1531 Log file, useful mostly for debugging
Find_69773.log 1735 Log file, useful mostly for debugging
Form_69776.log 865 Log file, useful mostly for debugging
Form_69777.log 903 Log file, useful mostly for debugging
Tune-6977-GlasgowCeilidhClub_Bm.abc 321 ABC music file with the extracted tune(s)
Tune-6977-GlasgowCeilidhClub_Bm.ps 34870 PostScript
Tune-6977-GlasgowCeilidhClub_Bm.txt 321 Plain-text file with the extracted tune(s)
Tune-6977-get.log 4544 Log file, useful mostly for debugging
These files should be available for 24 hours.