pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-1210-Svang_Schottis.ps) >>/Users/jc/w/tmp/Tune-1210-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scand/event/20190914/Svang_Schottis.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_12107.log 563496 Log file, useful mostly for debugging
Find_12107.log 1364 Log file, useful mostly for debugging
Form_12102.log 864 Log file, useful mostly for debugging
Form_12108.log 880 Log file, useful mostly for debugging
Tune-1210-Svang_Schottis.abc 2158 ABC music file with the extracted tune(s)
Tune-1210-Svang_Schottis.ps 53290 PostScript
Tune-1210-Svang_Schottis.txt 2158 Plain-text file with the extracted tune(s)
Tune-1210-get.log 15137 Log file, useful mostly for debugging
Tune-12100-get.log 24357 Log file, useful mostly for debugging
Tune-12108-get.log 3430 Log file, useful mostly for debugging
Tune-12109-get.log 3061 Log file, useful mostly for debugging
These files should be available for 24 hours.