pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4124-2152_Sir_John_Hendersons_Jigg.ps) >>/Users/jc/w/tmp/Tune-4124-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/book/Gow/CSR/2152_Sir_John_Hendersons_Jigg.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_41245.log 260446 Log file, useful mostly for debugging
Coll_41246.log 1099096 Log file, useful mostly for debugging
Form_41240.log 865 Log file, useful mostly for debugging
Tune-4124-2152_Sir_John_Hendersons_Jigg.abc 936 ABC music file with the extracted tune(s)
Tune-4124-2152_Sir_John_Hendersons_Jigg.ps 39471 PostScript
Tune-4124-2152_Sir_John_Hendersons_Jigg.txt 936 Plain-text file with the extracted tune(s)
Tune-4124-get.log 4864 Log file, useful mostly for debugging
Tune-41241-get.log 4010 Log file, useful mostly for debugging
Tune-41242-get.log 4363 Log file, useful mostly for debugging
Tune-41249-get.log 5263 Log file, useful mostly for debugging
These files should be available for 24 hours.