pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-794-31_LAY_DEE_AT_DEE.ps) >>/Users/jc/w/tmp/Tune-794-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/HaandMeDoonDaFiddle/31_LAY_DEE_AT_DEE.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_79408.log 68774 Log file, useful mostly for debugging
Coll_79418.log 269559 Log file, useful mostly for debugging
Coll_79421.log 280291 Log file, useful mostly for debugging
Coll_79423.log 282069 Log file, useful mostly for debugging
Coll_79424.log 66614 Log file, useful mostly for debugging
Coll_79427.log 257049 Log file, useful mostly for debugging
Coll_7944.log 133228 Log file, useful mostly for debugging
Coll_79442.log 70934 Log file, useful mostly for debugging
Coll_7945.log 67154 Log file, useful mostly for debugging
Coll_79452.log 64184 Log file, useful mostly for debugging
Coll_79466.log 134038 Log file, useful mostly for debugging
Coll_79478.log 254269 Log file, useful mostly for debugging
Coll_79483.log 69854 Log file, useful mostly for debugging
Coll_79490.log 65804 Log file, useful mostly for debugging
Form_79427.log 761 Log file, useful mostly for debugging
Form_79436.log 768 Log file, useful mostly for debugging
Form_7944.log 737 Log file, useful mostly for debugging
Form_79463.log 880 Log file, useful mostly for debugging
Form_79464.log 727 Log file, useful mostly for debugging
Form_79467.log 801 Log file, useful mostly for debugging
Form_79471.log 802 Log file, useful mostly for debugging
Form_79493.log 750 Log file, useful mostly for debugging
Sess-79422.log 3838845 Log file, useful mostly for debugging
Tune-794-31_LAY_DEE_AT_DEE.abc 840 ABC music file with the extracted tune(s)
Tune-794-31_LAY_DEE_AT_DEE.ps 35169 PostScript
Tune-794-31_LAY_DEE_AT_DEE.txt 840 Plain-text file with the extracted tune(s)
Tune-794-get.log 4365 Log file, useful mostly for debugging
Tune-79401-SMA_SNY.abc 208 ABC music file with the extracted tune(s)
Tune-79401-SMA_SNY.txt 208 Plain-text file with the extracted tune(s)
Tune-79401-get.log 4287 Log file, useful mostly for debugging
Tune-79405-get.log 9842 Log file, useful mostly for debugging
Tune-79407-get.log 2773 Log file, useful mostly for debugging
Tune-79409-Nathaniel_Gow.abc 530 ABC music file with the extracted tune(s)
Tune-79409-Nathaniel_Gow.malt 3250 Musical Instrument Digital Interface, alternate name for midi format
Tune-79409-Nathaniel_Gow.mid 3250 Musical Instrument Digital interface, shortened name for midi format
Tune-79409-Nathaniel_Gow.midi 3250 Musical Instrument Digital Interface, electronic version of the tune(s)
Tune-79409-Nathaniel_Gow.txt 530 Plain-text file with the extracted tune(s)
Tune-79409-get.log 3636 Log file, useful mostly for debugging
Tune-79413-get.log 3063 Log file, useful mostly for debugging
Tune-79414-get.log 3041 Log file, useful mostly for debugging
Tune-79428-get.log 3410 Log file, useful mostly for debugging
Tune-7943-get.log 2825012 Log file, useful mostly for debugging
Tune-79434-get.log 2863 Log file, useful mostly for debugging
Tune-79439-Adele_Dear-Cm,Dm,Gm,Am-72-4.abc 168 ABC music file with the extracted tune(s)
Tune-79439-Adele_Dear-Cm,Dm,Gm,Am-72-4.pdf 2217 Portable Data Format
Tune-79439-Adele_Dear-Cm,Dm,Gm,Am-72-4.ps 6 PostScript
Tune-79439-Adele_Dear-Cm,Dm,Gm,Am-72-4.txt 168 Plain-text file with the extracted tune(s)
Tune-79439-get.log 9708 Log file, useful mostly for debugging
Tune-79444-get.log 1657 Log file, useful mostly for debugging
Tune-79446-get.log 3981 Log file, useful mostly for debugging
Tune-79447-get.log 3047 Log file, useful mostly for debugging
Tune-79450-DublinJig_1.abc 283 ABC music file with the extracted tune(s)
Tune-79450-DublinJig_1.txt 283 Plain-text file with the extracted tune(s)
Tune-79450-get.log 2975 Log file, useful mostly for debugging
Tune-79453-get.log 1374 Log file, useful mostly for debugging
Tune-79455-get.log 49392 Log file, useful mostly for debugging
Tune-79456-get.log 10125 Log file, useful mostly for debugging
Tune-79471-get.log 1637 Log file, useful mostly for debugging
Tune-79475-get.log 3096 Log file, useful mostly for debugging
Tune-79475-tunebook.abc 667 ABC music file with the extracted tune(s)
Tune-79475-tunebook.txt 667 Plain-text file with the extracted tune(s)
Tune-79479-get.log 3309 Log file, useful mostly for debugging
Tune-7948-get.log 2995 Log file, useful mostly for debugging
Tune-79480-get.log 4723 Log file, useful mostly for debugging
Tune-7949-get.log 1390 Log file, useful mostly for debugging
Tune-79491-get.log 4077 Log file, useful mostly for debugging
Tune-79492-Glen_Ogle_D.abc 357 ABC music file with the extracted tune(s)
Tune-79492-Glen_Ogle_D.txt 357 Plain-text file with the extracted tune(s)
Tune-79492-get.log 2912 Log file, useful mostly for debugging
Tune-79499-get.log 3366 Log file, useful mostly for debugging
These files should be available for 24 hours.