pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-2647-UnderOver_PLFD1652_112.ps) >>/Users/jc/w/tmp/Tune-2647-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Playford/UnderOver_PLFD1652_112.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_26471.log 450011 Log file, useful mostly for debugging
Coll_26473.log 450010 Log file, useful mostly for debugging
Coll_26479.log 465409 Log file, useful mostly for debugging
Form_26471.log 956 Log file, useful mostly for debugging
Tune-2647-UnderOver_PLFD1652_112.abc 355 ABC music file with the extracted tune(s)
Tune-2647-UnderOver_PLFD1652_112.ps 33585 PostScript
Tune-2647-UnderOver_PLFD1652_112.txt 355 Plain-text file with the extracted tune(s)
Tune-2647-get.log 4712 Log file, useful mostly for debugging
Tune-26477-get.log 4959 Log file, useful mostly for debugging
Tune-26478-get.log 4477 Log file, useful mostly for debugging
These files should be available for 24 hours.