pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-68120-Si_Bheag_Si_Mhor-A-64-4.ps) >>/Users/jc/w/tmp/Tune-68120-get.log 2>&1" returned status 256
http://roaringjelly.org/~jc/music/session/waltz/Si_Bheag_Si_Mhor-A-64-4.abc

Error exit status 256; here are some files to check:
[P=get.cgi V=1/1 B=0 scale=0.65 512x512 PNG]
filesizedescription
Form_68120.log 839 Log file, useful mostly for debugging
Tune-68120-Si_Bheag_Si_Mhor-A-64-4.abc 1058 ABC music file with the extracted tune(s)
Tune-68120-Si_Bheag_Si_Mhor-A-64-4.ps 34690 PostScript
Tune-68120-Si_Bheag_Si_Mhor-A-64-4.txt 1058 Plain-text file with the extracted tune(s)
Tune-68120-get.log 4673 Log file, useful mostly for debugging
These files should be available for 24 hours.