pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-75872-fanny_power.ps) >>/Users/jc/w/tmp/Tune-75872-get.log 2>&1" returned status 256
http://www.piper-frank.de/tunebook/trad/abc/fanny_power.txt

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.60 512x512 PNG]
filesizedescription
Tune-75872-fanny_power.abc 2073 ABC music file with the extracted tune(s)
Tune-75872-fanny_power.ps 36318 PostScript
Tune-75872-fanny_power.txt 2073 Plain-text file with the extracted tune(s)
Tune-75872-get.log 4375 Log file, useful mostly for debugging
These files should be available for 24 hours.