pngcmd="(./ps2png 512 512 /Users/jc/w/tmp/Tune-8894-1082_Sir_James_Bairds_Strathspey.ps) >>/Users/jc/w/tmp/Tune-8894-get.log 2>&1" returned status 256
http://john-chambers.us/~jc/music/book/Gow/CSR/1082_Sir_James_Bairds_Strathspey.abc

Error exit status 256; here are some files to check:
[P=tuneget V=1/1 B=0 scale=0.70 512x512 PNG]
filesizedescription
Coll_8894.log 891619 Log file, useful mostly for debugging
Coll_88940.log 261011 Log file, useful mostly for debugging
Coll_88941.log 874820 Log file, useful mostly for debugging
Coll_88942.log 437410 Log file, useful mostly for debugging
Coll_88944.log 441610 Log file, useful mostly for debugging
Coll_88945.log 445809 Log file, useful mostly for debugging
Coll_88947.log 743219 Log file, useful mostly for debugging
Form_8894.log 1005 Log file, useful mostly for debugging
Tune-8894-1082_Sir_James_Bairds_Strathspey.abc 1019 ABC music file with the extracted tune(s)
Tune-8894-1082_Sir_James_Bairds_Strathspey.ps 41336 PostScript
Tune-8894-1082_Sir_James_Bairds_Strathspey.txt 1019 Plain-text file with the extracted tune(s)
Tune-8894-get.log 5034 Log file, useful mostly for debugging
Tune-88940-get.log 1464 Log file, useful mostly for debugging
These files should be available for 24 hours.