pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6540-PWFT.ps) >>/Users/jc/w/tmp/Tune-6540-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ViolaRuth/PWFT/PWFT.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
Form_65408.log 791 Log file, useful mostly for debugging
Tune-6540-PWFT.abc 641 ABC music file with the extracted tune(s)
Tune-6540-PWFT.ps 35606 PostScript
Tune-6540-PWFT.txt 641 Plain-text file with the extracted tune(s)
Tune-6540-get.log 4244 Log file, useful mostly for debugging
Tune-65403-get.log 4175 Log file, useful mostly for debugging
Tune-65404-get.log 1396 Log file, useful mostly for debugging
Tune-65407-get.log 3987 Log file, useful mostly for debugging
Tune-65407-tunebook-001.svg 14328 Scalable Vector Graphics format
Tune-65407-tunebook.abc 377 ABC music file with the extracted tune(s)
Tune-65407-tunebook.txt 377 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.