epscmd="jcabc2ps /u/guests/jc/w/tmp/Tune-6991-FH2012_B.abc -F fmt/pdf_65.fmt +E/u/guests/jc/w/tmp/Tune-6991-FH2012_B-.eps 2>>/u/guests/jc/w/tmp/Tune-6991-get.log" returned status 11.

Error exit status 11; here are some files to check:
[get.cgi V=1/1 B=1 scale=0.65 512x512 ]
filesizedescription
Tune-6991-FH2012_B-001.eps 30999 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-6991-FH2012_B-002.eps 39188 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-6991-FH2012_B-003.eps 35828 Encapsulated PostScript, for inclusion in PS files, HTML pages, etc.
Tune-6991-FH2012_B.abc 12219 ABC music file with the extracted tune(s)
Tune-6991-FH2012_B.txt 12219 Plain-text file with the extracted tune(s)
Tune-6991-get.log 15422 Log file, useful mostly for debugging
These files should be available for 24 hours.