pdfcmd="(/Users/jc/bin/ps2pdf /Users/jc/w/tmp/Tune-60510-Margarets_Waltz-A-32-3.ps /Users/jc/w/tmp/Tune-60510-Margarets_Waltz-A-32-3.pdf) >>/Users/jc/w/tmp/Tune-60510-get.log 2>&1" returned status 256

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 ]
filesizedescription
Tune-60510-Margarets_Waltz-A-32-3.abc 0 ABC music file with the extracted tune(s)
Tune-60510-Margarets_Waltz-A-32-3.ps 0 PostScript
Tune-60510-Margarets_Waltz-A-32-3.txt 0 Plain-text file with the extracted tune(s)
Tune-60510-get.log 50 Log file, useful mostly for debugging
These files should be available for 24 hours.