I am sure that is python -tt "usr/local/share/lyx-1.5.0b3/lyx2lyx/lwithout " at the end, but may be 1 o l the final
Then, can you manually convert your file? I mean, under a command prompt, run python -tt /usr/local/share/lyx-1.5.0b3/lyx2lyx/lyx2lyx -t 221 yourfile.lyx > newfile.lyx Bo
