pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-93394-72nds_Farewell_To_Aberdeen_Hp.ps) >>/Users/jc/w/tmp/Tune-93394-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/march/72nds_Farewell_To_Aberdeen_Hp.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_93394.log 144017 Log file, useful mostly for debugging
Tune-93394-72nds_Farewell_To_Aberdeen_Hp.abc 673 ABC music file with the extracted tune(s)
Tune-93394-72nds_Farewell_To_Aberdeen_Hp.ps 37654 PostScript
Tune-93394-72nds_Farewell_To_Aberdeen_Hp.txt 673 Plain-text file with the extracted tune(s)
Tune-93394-get.log 4754 Log file, useful mostly for debugging
These files should be available for 24 hours.