pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-45804-tunesjan2018.ps) >>/Users/jc/w/tmp/Tune-45804-get.log 2>&1" returned status 256
http://splashdance.org/tunesjan2018.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
Tune-45804-get.log 4124 Log file, useful mostly for debugging
Tune-45804-tunesjan2018.abc 374 ABC music file with the extracted tune(s)
Tune-45804-tunesjan2018.ps 35076 PostScript
Tune-45804-tunesjan2018.txt 374 Plain-text file with the extracted tune(s)
These files should be available for 24 hours.