pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-7218-Ryan-Cole.ps) >>/Users/jc/w/tmp/Tune-7218-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ryan-cole/Ryan-Cole.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
Form_72181.log 916 Log file, useful mostly for debugging
Tune-7218-Ryan-Cole.abc 704 ABC music file with the extracted tune(s)
Tune-7218-Ryan-Cole.ps 41108 PostScript
Tune-7218-Ryan-Cole.txt 704 Plain-text file with the extracted tune(s)
Tune-7218-get.log 218194 Log file, useful mostly for debugging
Tune-72183-Tha_Mi_Sgith.abc 1036 ABC music file with the extracted tune(s)
Tune-72183-Tha_Mi_Sgith.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-72183-Tha_Mi_Sgith.ps 37579 PostScript
Tune-72183-Tha_Mi_Sgith.txt 1036 Plain-text file with the extracted tune(s)
Tune-72183-get.log 11860 Log file, useful mostly for debugging
Tune-72187-get.log 3056 Log file, useful mostly for debugging
These files should be available for 24 hours.