pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-90541-CSRCD1.ps) >>/Users/jc/w/tmp/Tune-90541-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/RobertBremner/CSRCD1.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_90541.log 147042 Log file, useful mostly for debugging
Tune-90541-CSRCD1.abc 768 ABC music file with the extracted tune(s)
Tune-90541-CSRCD1.ps 35667 PostScript
Tune-90541-CSRCD1.txt 768 Plain-text file with the extracted tune(s)
Tune-90541-get.log 4304 Log file, useful mostly for debugging
These files should be available for 24 hours.