pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-83480-DumfriesLasses1_D16_JC.ps) >>/Users/jc/w/tmp/Tune-83480-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/SCD/Book26/DumfriesLasses1_D16_JC.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_83480.log 131068 Log file, useful mostly for debugging
Tune-83480-DumfriesLasses1_D16_JC.abc 381 ABC music file with the extracted tune(s)
Tune-83480-DumfriesLasses1_D16_JC.ps 33811 PostScript
Tune-83480-DumfriesLasses1_D16_JC.txt 381 Plain-text file with the extracted tune(s)
Tune-83480-get.log 5980 Log file, useful mostly for debugging
These files should be available for 24 hours.