As of Version 3 of the log cleaner HUD you must login using your SL username below NOT avatar name. To update make sure you have version 3 of both the HUD and the premium key. Wear or rez the version 3 premium key to update your account to work with V3.
If you have not yet updated you should still be able to login using your legacy avatar name.
Any issues please IM zp.lyric in world.