Got HTTP status 404 Not Found for "http://john-chambers.us/~jc/music/abc/Scotland/event/20180827/EdinburghToyShop.abc"
X:4 not found in http://john-chambers.us/~jc/music/abc/Scotland/event/20180827/EdinburghToyShop.abc
pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-269-EdinburghToyShop.ps) >>/Users/jc/w/tmp/Tune-269-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/Scotland/event/20180827/EdinburghToyShop.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_26914.log 258044 Log file, useful mostly for debugging
Coll_26990.log 133732 Log file, useful mostly for debugging
Form_26902.log 902 Log file, useful mostly for debugging
Form_2694.log 839 Log file, useful mostly for debugging
Form_26955.log 847 Log file, useful mostly for debugging
Form_26989.log 816 Log file, useful mostly for debugging
Tune-269-EdinburghToyShop.abc 0 ABC music file with the extracted tune(s)
Tune-269-EdinburghToyShop.ps 6 PostScript
Tune-269-EdinburghToyShop.txt 0 Plain-text file with the extracted tune(s)
Tune-269-get.log 4546 Log file, useful mostly for debugging
Tune-26903-get.log 4760 Log file, useful mostly for debugging
Tune-26916-get.log 5261 Log file, useful mostly for debugging
Tune-26941-get.log 3617 Log file, useful mostly for debugging
Tune-26956-get.log 1720 Log file, useful mostly for debugging
Tune-26962-get.log 1385 Log file, useful mostly for debugging
Tune-26971-get.log 23563 Log file, useful mostly for debugging
Tune-26991-get.log 1720 Log file, useful mostly for debugging
Tune-26992-get.log 299481 Log file, useful mostly for debugging
Tune-26997-get.log 15571 Log file, useful mostly for debugging
These files should be available for 24 hours.