pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-16601-BRIDGE_BRITT.ps) >>/Users/jc/w/tmp/Tune-16601-get.log 2>&1" returned status 256
http://www.ibiblio.org/fiddlers/BRIDGE_BRITT.htm

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_16601.log 264789 Log file, useful mostly for debugging
Tune-16601-BRIDGE_BRITT.abc 363 ABC music file with the extracted tune(s)
Tune-16601-BRIDGE_BRITT.ps 34508 PostScript
Tune-16601-BRIDGE_BRITT.txt 363 Plain-text file with the extracted tune(s)
Tune-16601-get.log 4341 Log file, useful mostly for debugging
These files should be available for 24 hours.