log on as an administrator on the machine, run limewire once, close it, and then log back in as normal.

or, right-click on the folder that limewire was installed in and uncheck 'read only', 'hidden' or 'system'. (i forget what options are available.)

the goal is to give you 'write' permissions in the folder limewire was installed in.

future versions will hopefully not need this, as they're moving any written files to other user directories.