pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6529-waltzes.ps) >>/Users/jc/w/tmp/Tune-6529-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/mirror/galouvielle.free.fr/waltzes.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_65291.log 69 Log file, useful mostly for debugging
Coll_65292.log 254919 Log file, useful mostly for debugging
Tune-6529-get.log 4204 Log file, useful mostly for debugging
Tune-6529-waltzes.abc 241 ABC music file with the extracted tune(s)
Tune-6529-waltzes.ps 33152 PostScript
Tune-6529-waltzes.txt 241 Plain-text file with the extracted tune(s)
Tune-65292-get.log 16382 Log file, useful mostly for debugging
Tune-65293-get.log 6799 Log file, useful mostly for debugging
Tune-65295-get.log 4486 Log file, useful mostly for debugging
These files should be available for 24 hours.