pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1960-GlenGrant_A_JC.ps) >>/Users/jc/w/tmp/Tune-1960-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book17/GlenGrant_A_JC.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_1960.log 65534 Log file, useful mostly for debugging
Coll_19601.log 65804 Log file, useful mostly for debugging
Coll_19603.log 69044 Log file, useful mostly for debugging
Coll_19604.log 65804 Log file, useful mostly for debugging
Tune-1960-GlenGrant_A_JC.abc 498 ABC music file with the extracted tune(s)
Tune-1960-GlenGrant_A_JC.ps 37664 PostScript
Tune-1960-GlenGrant_A_JC.txt 498 Plain-text file with the extracted tune(s)
Tune-1960-get.log 4208 Log file, useful mostly for debugging
These files should be available for 24 hours.