pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-6691-MILLER.ps) >>/Users/jc/w/tmp/Tune-6691-get.log 2>&1" returned status 256
http://www.cpartington.plus.com/Links/Miller/MILLER(12-4-2016).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_66913.log 281436 Log file, useful mostly for debugging
Coll_66919.log 329883 Log file, useful mostly for debugging
Form_66915.log 0 Log file, useful mostly for debugging
Form_66916.log 908 Log file, useful mostly for debugging
Form_66919.log 759 Log file, useful mostly for debugging
Tune-6691-MILLER.abc 415 ABC music file with the extracted tune(s)
Tune-6691-MILLER.ps 33870 PostScript
Tune-6691-MILLER.txt 415 Plain-text file with the extracted tune(s)
Tune-6691-get.log 45047 Log file, useful mostly for debugging
Tune-66915-get.log 3551 Log file, useful mostly for debugging
Tune-66916-High_Drive-D-64-8.abc 0 ABC music file with the extracted tune(s)
Tune-66916-High_Drive-D-64-8.ps 0 PostScript
Tune-66916-High_Drive-D-64-8.txt 0 Plain-text file with the extracted tune(s)
Tune-66916-get.log 0 Log file, useful mostly for debugging
Tune-66918-get.log 3147 Log file, useful mostly for debugging
These files should be available for 24 hours.