pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-9469-1342_Jenny_Dang_the_Weaver.ps) >>/Users/jc/w/tmp/Tune-9469-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CR/1342_Jenny_Dang_the_Weaver.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_9469.log 1354941 Log file, useful mostly for debugging
Coll_94691.log 1176505 Log file, useful mostly for debugging
Coll_94694.log 363014 Log file, useful mostly for debugging
Coll_94696.log 1079560 Log file, useful mostly for debugging
Tune-9469-1342_Jenny_Dang_the_Weaver.abc 974 ABC music file with the extracted tune(s)
Tune-9469-1342_Jenny_Dang_the_Weaver.ps 39861 PostScript
Tune-9469-1342_Jenny_Dang_the_Weaver.txt 974 Plain-text file with the extracted tune(s)
Tune-9469-get.log 4797 Log file, useful mostly for debugging
Tune-94690-get.log 4777 Log file, useful mostly for debugging
Tune-94691-Miss_Browns_Fancy_829-D-32-4-001.svg 21961 Scalable Vector Graphics format
Tune-94691-Miss_Browns_Fancy_829-D-32-4.abc 668 ABC music file with the extracted tune(s)
Tune-94691-Miss_Browns_Fancy_829-D-32-4.txt 668 Plain-text file with the extracted tune(s)
Tune-94691-get.log 4610 Log file, useful mostly for debugging
Tune-94692-get.log 3913 Log file, useful mostly for debugging
Tune-94696-get.log 3770 Log file, useful mostly for debugging
These files should be available for 24 hours.