pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-234-Amaryllis_1665_PLFD1_165_CP.ps) >>/Users/jc/w/tmp/Tune-234-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/Amaryllis_1665_PLFD1_165_CP.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_2343.log 256329 Log file, useful mostly for debugging
Coll_23479.log 264789 Log file, useful mostly for debugging
Coll_23494.log 135547 Log file, useful mostly for debugging
Find_23458.log 1413 Log file, useful mostly for debugging
Find_23485.log 1349 Log file, useful mostly for debugging
Form_23422.log 839 Log file, useful mostly for debugging
Tune-234-Amaryllis_1665_PLFD1_165_CP.abc 331 ABC music file with the extracted tune(s)
Tune-234-Amaryllis_1665_PLFD1_165_CP.ps 34074 PostScript
Tune-234-Amaryllis_1665_PLFD1_165_CP.txt 331 Plain-text file with the extracted tune(s)
Tune-234-get.log 4839 Log file, useful mostly for debugging
Tune-23405-get.log 3273 Log file, useful mostly for debugging
Tune-23413-get.log 3299 Log file, useful mostly for debugging
Tune-23436-get.log 4242 Log file, useful mostly for debugging
Tune-23448-get.log 5004 Log file, useful mostly for debugging
Tune-23462-get.log 4121 Log file, useful mostly for debugging
Tune-23463-get.log 4206 Log file, useful mostly for debugging
Tune-23473-get.log 3317 Log file, useful mostly for debugging
Tune-23494-get.log 1452 Log file, useful mostly for debugging
These files should be available for 24 hours.