looks like you have metadata from a newer version of Ubuntu One. This can happen if you install a newer version and then go back to an older version.
The Workaround
1. Quit the Ubuntu One control panel if open. Then open a Terminal (Applications > Accessories > Terminal) and run the following to quit the syncdaemon.
u1sdtool -q
2. Delete the old metadata. In a Terminal run.
rm -rf ~/.local/share/ubuntuone
3. Start Ubuntu One as you normally would. It will take a little while for the new metadata to be created.
looks like you have metadata from a newer version of Ubuntu One. This can happen if you install a newer version and then go back to an older version.
The Workaround
1. Quit the Ubuntu One control panel if open. Then open a Terminal (Applications > Accessories > Terminal) and run the following to quit the syncdaemon.
u1sdtool -q
2. Delete the old metadata. In a Terminal run.
rm -rf ~/.local/ share/ubuntuone
3. Start Ubuntu One as you normally would. It will take a little while for the new metadata to be created.
thank you,
duanedesign