pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-11369-Calliope_Andy_All_New_Set-BSFC---.ps) >>/Users/jc/w/tmp/Tune-11369-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/abc/session/set/Calliope_Andy_All_New_Set-BSFC---.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
Tune-11369-Calliope_Andy_All_New_Set-BSFC---.abc 541 ABC music file with the extracted tune(s)
Tune-11369-Calliope_Andy_All_New_Set-BSFC---.ps 36707 PostScript
Tune-11369-Calliope_Andy_All_New_Set-BSFC---.txt 541 Plain-text file with the extracted tune(s)
Tune-11369-get.log 4763 Log file, useful mostly for debugging
These files should be available for 24 hours.