pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-34920-O_Come_All_Ye_Faithful.ps) >>/Users/jc/w/tmp/Tune-34920-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/england/O_Come_All_Ye_Faithful.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Tune-34920-O_Come_All_Ye_Faithful.abc 951 ABC music file with the extracted tune(s)
Tune-34920-O_Come_All_Ye_Faithful.ps 37540 PostScript
Tune-34920-O_Come_All_Ye_Faithful.txt 951 Plain-text file with the extracted tune(s)
Tune-34920-get.log 10324 Log file, useful mostly for debugging
These files should be available for 24 hours.