pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8119-BraesOfBreadalbane1.ps) >>/Users/jc/w/tmp/Tune-8119-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/event/20180406/BraesOfBreadalbane1.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_8119.log 261219 Log file, useful mostly for debugging
Coll_81199.log 66614 Log file, useful mostly for debugging
Form_81195.log 734 Log file, useful mostly for debugging
Form_81197.log 739 Log file, useful mostly for debugging
Tune-8119-BraesOfBreadalbane1.abc 357 ABC music file with the extracted tune(s)
Tune-8119-BraesOfBreadalbane1.ps 34738 PostScript
Tune-8119-BraesOfBreadalbane1.txt 357 Plain-text file with the extracted tune(s)
Tune-8119-get.log 4521 Log file, useful mostly for debugging
Tune-81194-get.log 2949 Log file, useful mostly for debugging
These files should be available for 24 hours.