pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-65235-AuntMarys_Scarce_Calliope_set.ps) >>/Users/jc/w/tmp/Tune-65235-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/session/NYE_20191231/AuntMarys_Scarce_Calliope_set.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
Form_65235.log 864 Log file, useful mostly for debugging
Tune-65235-AuntMarys_Scarce_Calliope_set.abc 637 ABC music file with the extracted tune(s)
Tune-65235-AuntMarys_Scarce_Calliope_set.ps 35612 PostScript
Tune-65235-AuntMarys_Scarce_Calliope_set.txt 637 Plain-text file with the extracted tune(s)
Tune-65235-get.log 5803 Log file, useful mostly for debugging
These files should be available for 24 hours.