[SOLVED] Can't update sickbeard

[kataclank]

Hi,

Mi sickbeard runs perfect put i have this message:

Unknown version: If you've never used the Sick Beard upgrade system then I don't know what version you have.

When i tried to update get the next error:

Update wasn't successful, not restarting. Check your log for more information.
CP Server Thread-4 :: Error while trying to update: expected a character buffer object

Any idea?

Thanks!