pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-4972-10032_Duke_of_Perths_Reel.ps) >>/Users/jc/w/tmp/Tune-4972-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/ERM/10032_Duke_of_Perths_Reel.abc

Error exit status 256; here are some files to check:
[get.cgi V=1/1 B=0 scale=0.55 512x512 PNG]
filesizedescription
Coll_4972.log 275904 Log file, useful mostly for debugging
Tune-4972-10032_Duke_of_Perths_Reel.abc 674 ABC music file with the extracted tune(s)
Tune-4972-10032_Duke_of_Perths_Reel.ps 35377 PostScript
Tune-4972-10032_Duke_of_Perths_Reel.txt 674 Plain-text file with the extracted tune(s)
Tune-4972-get.log 4715 Log file, useful mostly for debugging
Tune-49722-UpTailsAll.abc 204 ABC music file with the extracted tune(s)
Tune-49722-UpTailsAll.gif 0 Graphics Interchange Format, the proprietary scan-line picture format
Tune-49722-UpTailsAll.ps 31602 PostScript
Tune-49722-UpTailsAll.txt 204 Plain-text file with the extracted tune(s)
Tune-49722-get.log 5220 Log file, useful mostly for debugging
Tune-49723-get.log 1549 Log file, useful mostly for debugging
Tune-49727-get.log 4572 Log file, useful mostly for debugging
These files should be available for 24 hours.